third class

noun

A reduced-rate mail service for printed matter.

Similar
third-class mailtourist class

Meanings

adjectivethird class (not comparable)

alternative third-class · alternative 3rd-class · alternative 3rd class

  1. alternativenot comparableAlternative spelling of third-class.
nounthird class (countable and uncountable, plural third classes)

plural third classes · alternative third-class · alternative 3rd-class · alternative 3rd class

  1. UScountableuncountableA reduced-rate mail service for printed matter.
  2. countableuncountablelifestyleA class of accommodation in travel below second class.
    1. UKcountablehistoricaluncountablelifestyleThe cheapest accommodation on a train or ship.

      Mail trains are limited to first and second class passengers, but on the mixed trains third class is also provided, and this is patronised exclusively by natives.

      1940 December, O. S. M. Raw, “The Rhodesia Railways—II”, in Railway Magazine, page 640
      2 more examples

      Mayhew's survey found that 69 per cent of Met travellers went by third class, 20.5 per cent second, 10.5 per cent first. The Met would abolish second class in 1905 at the time of electrification.

      2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 46

      Allport's decision in 1872 to abolish Second Class on the Midland and effectively upgrade Third Class to the standards of Second, most notably with upholstered seating, sent shockwaves through the Victorian railway.

      2023 February 8, Conrad Landin, “Bon appetit: 150 years of railway dining”, in RAIL, number 976, page 47

Synonyms & antonyms

nounmail consisting of printed matter qualifying for reduced postal rates

Similar
third-class mail
Broader

nouninexpensive accommodations on a ship or train

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

French troisième classe
  • troisième classecheapest accomodation on a train or ship
Cite this entry
APA

third class. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/third%20class

MLA

“third class.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/third%20class. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “third class,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/third%20class.

Source: third class on Wiktionary, CC BY-SA 4.0.