built in bed

English Thesaurus

1. a bed on a ship or train; usually in tiers (noun.artifact)

hypernym	:	bed,
definition	:	a piece of furniture that provides a place to sleep (noun.artifact)

hyponym	:	lower, lower berth,
definition	:	the lower of two berths (noun.artifact)

hyponym	:	upper, upper berth,
definition	:	the higher of two berths (noun.artifact)

derivation	:	berth,
definition	:	provide with a berth (verb.possession)

derivation	:	berth,
definition	:	provide with a berth (verb.possession)