built-in bed buil·tin·bed uncommon noun 1. a bed that is built in and fixed to a wall Synonymsbuilt-in bed 2. a bed on a ship or train; usually in tiers Synonymsberthbunkbuilt in bed Related words Word family berth Broader terms bed Narrower terms lower berthupper berth WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
