Meanings
plural backslashes · alternative back slash
- The punctuation mark \ (a left-leaning diagonal line). (Common uses include (1) use as a delimiter in filepaths and (2) use as an escape character to mark literals.)
Synonyms: backward slash, reverse solidus, slosh, whack
- proscribedrarecomputingThe punctuation mark /; a slash, forward slash.
Also, avoid submenus^([sic]) that can confuse the audience—if you're giving lengthy Web site addresses full of backslashes, shorten it so only the Web site's home page is given.
2010, Frank Barnas, Ted White, Broadcast News Writing, Reporting, and Producing, Fifth Edition, Elsevier, →ISBN, page 1142 more examples
[…] I was trying to find a web-site for which I had been given the following address: http://www.isop.ucla.edu/pacrim/pubs/korjournal.htm. […] I began to work backwards, removing first the last part of the address following the last backslash (/korjournal.htm).
2001, James T. Bretzke, Bibliography on East Asian Religion and Philosophy, Edwin Mellen Press, →ISBN, page 455“So, do what I tell you. Open a browser window and type this in the menu^([sic]) bar: F-T-P colon backslash backslash euronews dot net backslash...” I pecked carefully at the keyboard as he dictated a URL that was about fifty characters long, […]
2010, Lee Vance, The Garden of Betrayal, Random House, published 2011, →ISBN, page 25
present singular third person backslashes · participle present backslashing · participle past backslashed · past backslashed · alternative back slash
- transitivecomputingTo escape (a metacharacter) by prepending a backslash that serves as an escape character, thereby forming an escape sequence.
Synonyms & antonyms
nounThe punctuation mark \ (a left-leaning diagonal line). (Common uses include (1) use as a delimiter in filepaths and (2) use as an escape character to mark literals.)
Origin
From back + slash, because it is a slash “leaning back” against the direction of writing (in writing lines from left to right), in contrast to the more common (forward) slash / (“solidus, oblique, diagonal”). The actual direction of (hand-)writing these marks can be reversed, when writing from left to right, top to baseline: the backslash forwards, the (forward) slash backwards. The naming can be explained as an anthropomorphism, assuming a bar (|) standing on the baseline, facing in the direction of writing, toppling backwards or forwards, respectively. The (new) Unicode name of \ is REVERSE SOLIDUS.
Full word history & related roots →Translations
Arabic مَائِلَة مُعَاكِسَة
- مَائِلَة مُعَاكِسَة (māʔila muʕākisa)punctuation mark
Bulgarian обра́тна черта́
- обра́тна черта́ (obrátna čertá)punctuation mark
Chinese Mandarin 反斜線 /反斜线, 反斜槓 /反斜杠
- 反斜線 /反斜线 (fǎnxiéxiàn)punctuation mark
- 反斜槓 /反斜杠 (fǎnxiégàng)punctuation mark
Czech zpětné lomítko
- zpětné lomítkopunctuation mark
Dutch backslash, terugschrap
- backslashpunctuation mark
- terugschrappunctuation mark
- omgekeerde schuine streeppunctuation mark
- schuine streep naar linkspunctuation mark
- schuine streep naar achterpunctuation mark
- terugstreeppunctuation mark
Esperanto deklivo
- deklivopunctuation mark
Estonian kurakaldkriips, längkriips
- kurakaldkriipspunctuation mark
- längkriipspunctuation mark
- kurakriipspunctuation mark
Finnish kenoviiva
- kenoviivapunctuation mark
French barre oblique inversée, contre-oblique
- barre oblique inverséepunctuation mark
- contre-obliquepunctuation mark
- backslashpunctuation mark
- antislashpunctuation mark
German Backslash, Rückwärtsschrägstrich
- Backslashpunctuation mark
- Rückwärtsschrägstrichpunctuation mark
Greek αντιπλάγια, ανάστροφη κάθετος
- αντιπλάγια (antiplágia)punctuation mark
- ανάστροφη κάθετος (anástrofi káthetos)punctuation mark
Hungarian fordított törtvonal
- fordított törtvonalpunctuation mark
Italian barra inversa
- barra inversapunctuation mark
Japanese バックスラッシュ, 逆斜線
- バックスラッシュ (bakkusurasshu)punctuation mark
- 逆斜線 (gyakushasen)punctuation mark
Korean 역슬래시, 역사선
- 역슬래시 (yeokseullaesi)punctuation mark
- 역사선 (yeoksaseon)punctuation mark
Norwegian Bokmål bakstrek
- bakstrekpunctuation mark
Polish ukośnik odwrotny, ukośnik wsteczny
- ukośnik odwrotnypunctuation mark
- ukośnik wstecznypunctuation mark
- ukośnik lewypunctuation mark
Portuguese barra invertida, barra inversa
- barra invertidapunctuation mark
- barra inversapunctuation mark
- contrabarrapunctuation mark
Romanian bară oblică inversă, linie oblică inversă
- bară oblică inversăpunctuation mark
- linie oblică inversăpunctuation mark
Russian обра́тная коса́я, обра́тная коса́я черта́
- обра́тная коса́я (obrátnaja kosája)punctuation mark
- обра́тная коса́я черта́ (obrátnaja kosája čertá)punctuation mark
- обра́тный слэш (obrátnyj slɛš)punctuation mark
- бе́кслэ́ш (békslɛ́š)punctuation mark
Slovak spätná lomka, opačná lomka
- spätná lomkapunctuation mark
- opačná lomkapunctuation mark
Spanish barra inversa, barra oblicua inversa
- barra inversapunctuation mark
- barra oblicua inversapunctuation mark
- barra invertidapunctuation mark
- barra revertidapunctuation mark
- contrabarrapunctuation mark
Thai แบ็กสแลช
- แบ็กสแลชpunctuation mark
Turkish ters bölü
- ters bölüpunctuation mark
Ukrainian обе́рнена скісна́ ри́ска, бе́кслеш
- обе́рнена скісна́ ри́ска (obérnena skisná rýska)punctuation mark
- бе́кслеш (béksleš)punctuation mark
Rhymes & wordplay
Rhymes with backslash
Cite this entry
backslash. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/backslash
“backslash.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/backslash. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “backslash,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/backslash.
Source: backslash on Wiktionary, CC BY-SA 4.0.