couchette

Etymology
Borrowed from.

Noun

 * 1)  A couch.
 * 2) A compartment on a passenger train having berths for sleeping.
 * 3) A berth in such a compartment.
 * 1) A berth in such a compartment.
 * 1) A berth in such a compartment.

Etymology
From.

Noun

 * 1)  sleeping berth