ballast

B3A1L1L1A1S1T1
UK, US/ˈbæl.əst/

noun

Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.

Similar
Less commonScrabble 9

Meanings

nounballast (usually uncountable, plural ballasts)

plural ballasts

  1. uncountableusuallynauticalHeavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.

    “Oh, for the-- how much did you waste on that little boondoggle?” “Well, it's not that so much as--” “Krieger.” “Well, I needed ballast, and what better to simulate bricks of cocaine than, you know, bricks of cocaine.”

    2014 March 24, Adam Reed, “On the Carpet” (18:15 from the start), in Archer, season 5, episode 9, spoken by Dr. Algernop Krieger (Lucky Yates)
  2. figurativelyuncountableusuallyAnything that steadies emotion or the mind.
  3. uncountableusuallyCoarse gravel or similar material laid to form a bed for roads or railroads, or in making concrete; track ballast.
  4. uncountableusuallybusinessA material, such as aggregate or precast concrete pavers, which employs its mass and the force of gravity to hold single-ply roof membranes in place.
    1. uncountableusuallybusinessLoose stone or big gravel used to hold rails and tracks in place.
  5. countableusuallybusinessdevice used for stabilizing current in an electric circuit (e.g. in a tube lamp supply circuit)
  6. figurativelyuncountableusuallyThat which gives, or helps to maintain, uprightness, steadiness, and security.

    It [piety] is the right ballast of prosperity.

    a. 1677, Isaac Barrow, The Profitableness of Godliness
    1 more example

    With 73 minutes gone Rafael Márquez came on to add ballast at the back, appearing in his fifth World Cup aged 39 and with alleged links to drug trafficking, which he denies, on hold for now. And so they sat deep with a thin green line of five defenders ranged across their own penalty area as the game became a Mexican stand-off, attack versus defence.

    2018 June 17, Barney Ronay, “Mexico’s Hirving Lozano stuns world champions Germany for brilliant win”, in Katharine Viner, editor, The Guardian, London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 05 Aug 2019
verbballast (third-person singular simple present ballasts, present participle ballasting, simple past and past participle ballasted)

present singular third person ballasts · participle present ballasting · participle past ballasted · past ballasted

  1. transitiveTo stabilize or load a ship with ballast.
  2. transitiveTo lay ballast on the bed of a railroad track.

    The task of a Railway Construction Company, R.E., is to lay and ballast the track; [...].

    1943 September and October, “Railway Construction and Operation at War Department Depots”, in Railway Magazine, page 262
    1 more example

    Although the track is ballasted, it does not prevent clouds of reddish dust from the laterite soil blowing about when the train is in motion; after a journey with the windows open a bath is a necessity!

    1948 September and October, W. S. Darby, “The Gold Coast Railway—1”, in Railway Magazine, page 287
  3. transitiveTo weigh down with a ballast.

    The noosance was […] that to make the umbrella effective he would have to carry abroad such weight to ballast it as would put the whole contraption out of action for carrying abroad at all.

    1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, →OCLC, page 35

Synonyms & antonyms

nouna resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)

nounan electrical device for starting and regulating fluorescent and discharge lamps

Similar
light ballast
Broader
electrical device

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Middle Englishbar“bare”
  2. Englishballast

From Middle English bar (“bare”) + last (“load”).

Full word history & related roots →

Translations

Ancient Greek ἕρμα
  • ἕρμα (hérma)heavy material placed in the hold of a vessel
Bulgarian баласт, баластра
  • баласт (balast)heavy material placed in the hold of a vessel
  • баластра (balastra)material laid to form a bed for a road
  • товар (tovar)electronics
Catalan llast, llastar
  • llastheavy material placed in the hold of a vessel
  • llastarto stabilize a ship with ballast
Chinese Mandarin 壓載 /压载, 道砟
  • 壓載 /压载 (yāzài)heavy material placed in the hold of a vessel
  • 道砟 (dàozhǎ)material laid to form a bed for a road
  • 道碴 (dàozhǎ, dàochá)material laid to form a bed for a road
Czech zátěž
  • zátěžheavy material placed in the hold of a vessel
Danish ballast
  • ballastheavy material placed in the hold of a vessel
Dutch ballast, bedding
  • ballastheavy material placed in the hold of a vessel
  • beddingmaterial laid to form a bed for a road
  • ballastbedmaterial laid to form a bed for a road
  • ballastelectronics
Esperanto balasto, balasto
  • balastoheavy material placed in the hold of a vessel
  • balastomaterial laid to form a bed for a road
Estonian ballast, ballast
  • ballastheavy material placed in the hold of a vessel
  • ballastmaterial laid to form a bed for a road
  • ballastelectronics
  • ballastimato stabilize a ship with ballast
  • ballastimato lay ballast on the bed of a railway track
Finnish painolasti, paarlasti
  • painolastiheavy material placed in the hold of a vessel
  • paarlastiheavy material placed in the hold of a vessel
  • raidesoramaterial laid to form a bed for a road
  • raidesepelimaterial laid to form a bed for a road
  • tukikerrosmaterial laid to form a bed for a road
  • kuristinelectronics
  • virranrajoitinelectronics
  • elektroninen virranrajoitinelectronics
  • ottaa painolastiato stabilize a ship with ballast
  • sepelöidäto lay ballast on the bed of a railway track
  • tasapainottaato weigh down with a ballast
French lest, remblai
  • lestheavy material placed in the hold of a vessel
  • remblaimaterial laid to form a bed for a road
  • ballastmaterial laid to form a bed for a road
  • ballastelectronics
  • ballasterto stabilize a ship with ballast
German Ballast, Bettung
  • Ballastheavy material placed in the hold of a vessel
  • Bettungmaterial laid to form a bed for a road
  • Schottermaterial laid to form a bed for a road
  • beschotternto lay ballast on the bed of a railway track
Greek έρμα, σαβούρα
  • έρμα (érma)heavy material placed in the hold of a vessel
  • σαβούρα (savoúra)heavy material placed in the hold of a vessel
Hebrew רבד
  • רבד (reved)material laid to form a bed for a road
Hungarian ballaszt, holtsúly
  • ballasztheavy material placed in the hold of a vessel
  • holtsúlyheavy material placed in the hold of a vessel
Indonesian balas, balas
  • balasheavy material placed in the hold of a vessel
  • balasmaterial laid to form a bed for a road
Italian zavorra, massicciata
  • zavorraheavy material placed in the hold of a vessel
  • massicciatamaterial laid to form a bed for a road
  • regolatoreelectronics
Japanese バラスト
  • バラスト (barasuto)heavy material placed in the hold of a vessel
Korean 밸러스트
  • 밸러스트 (baelleoseuteu)heavy material placed in the hold of a vessel
Latin saburro
  • saburroto stabilize a ship with ballast
Māori taowaka, pēhanga kowhatu
  • taowakaheavy material placed in the hold of a vessel
  • pēhanga kowhatuheavy material placed in the hold of a vessel
  • pēhiheavy material placed in the hold of a vessel
  • tautato stabilize a ship with ballast
Norwegian ballast, fundament
  • ballastmaterial laid to form a bed for a road
  • fundamentmaterial laid to form a bed for a road
  • ballasteto stabilize a ship with ballast
Norwegian Bokmål ballast
  • ballastheavy material placed in the hold of a vessel
Polish balast, balast
  • balastheavy material placed in the hold of a vessel
  • balastmaterial laid to form a bed for a road
  • podsypkamaterial laid to form a bed for a road
  • balastowaćto stabilize a ship with ballast
  • balastowaćto weigh down with a ballast
Portuguese lastro, balastro
  • lastroheavy material placed in the hold of a vessel
  • balastromaterial laid to form a bed for a road
Romanian balast, lest
  • balastheavy material placed in the hold of a vessel
  • lestheavy material placed in the hold of a vessel
  • pietrișmaterial laid to form a bed for a road
  • balastmaterial laid to form a bed for a road
  • blocajmaterial laid to form a bed for a road
  • balastelectronics
Russian балла́ст
  • балла́ст (ballást)heavy material placed in the hold of a vessel
Spanish lastre, lastre
  • lastreheavy material placed in the hold of a vessel
  • lastreanything that steadies emotion or mind
  • balastromaterial laid to form a bed for a road
  • balastomaterial laid to form a bed for a road
  • balastoelectronics
  • balastraelectronics
  • balastroelectronics
  • lastrarto stabilize a ship with ballast
Swedish barlast, ballast
  • barlastheavy material placed in the hold of a vessel
  • ballastheavy material placed in the hold of a vessel
  • barlastmaterial laid to form a bed for a road
  • ballastmaterial laid to form a bed for a road
Tagalog tulakbahala
  • tulakbahalaheavy material placed in the hold of a vessel
Thai อับเฉา, บัลลาสต์
  • อับเฉา (àp-chǎo)heavy material placed in the hold of a vessel
  • บัลลาสต์ (ban-làat)electronics
Turkish balast, safra
  • balastheavy material placed in the hold of a vessel
  • safraheavy material placed in the hold of a vessel
  • balastmaterial laid to form a bed for a road
Ukrainian бала́ст, бала́ст
  • бала́ст (balást)heavy material placed in the hold of a vessel
  • бала́ст (balást)material laid to form a bed for a road
Cite this entry
APA

ballast. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/ballast

MLA

“ballast.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ballast. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “ballast,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/ballast.

Source: ballast on Wiktionary, CC BY-SA 4.0.