[thurd-klas, -klahs]
  1. by third-class mail or passenger accommodations: to travel third-class.

Origin of third-class

First recorded in 1830–40

third class

  1. the class, grade, or rank immediately below the second.
  2. the least costly class of accommodations on trains, in hotels, etc.Compare tourist class.
  3. (in the U.S. Postal Service) the class of mail consisting of merchandise weighing up to 16 ounces, and written or printed material, as books, manuscripts, or circulars, not sealed against postal inspection.
  4. the lowest of three honors degrees conferred by a British university.

Origin of third class

First recorded in 1835–45 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for third-class

Historical Examples of third-class

British Dictionary definitions for third-class

third class

  1. the class or grade next in value, quality, etc, to the second
adjective (third-class when prenominal)
  1. of the class or grade next in value, quality, etc, to the second
  2. of or denoting the class of accommodation in a hotel, on a ship, etc, next in quality and price to the second: usually the cheapest
  3. (in the US and Canada) of or relating to a class of mail consisting largely of unsealed printed matter
  4. British See third (def. 8)
  1. by third-class mail, transport, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012