a sleeping berth in a passenger compartment that can be collapsed to form a benchlike seat for daytime use.
a compartment containing such berths.
Origin of couchette
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a bed in a railway carriage, esp one converted from seats
Word Origin for couchette
C20: from French, diminutive of couche bed
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