From Longman Dictionary of Contemporary Englishbunkbunk1 /bʌŋk/ noun 1 [countable]TTTTTW a narrow bed that is attached to the wall, for example on a train or ship2 (also bunk bed) [often plural]DHF one of two beds that are attached together, one on top of the other3 → do a bunk4 [uncountable] informalUNTRUE nonsense SYN bunkum What a load of bunk!
Examples from the Corpusbunk• We were ready to do a bunk.• By the way, the main cabin with the double bunk is Fen's.• During the night I wake to dash the two yards from bunk to bathroom.• The men lay on the bunks, all but one.bunkbunk2 (also bunk down) verb [intransitive] informal SLEEPto sleep somewhere, especially in someone else’s house You can bunk down on the sofa for tonight. → bunk off (something)→ See Verb table
Examples from the Corpusbunk• Participants, who bunked down in cabins or slept under the stars, paid $ 50 to attend the affair.• So I bunked in the toilet window and I couldn't believe it!• The truth was I really fancied going there but I didn't even have the money to bunk the tube.• I bunked with friends in Washington.• Shit, I sound like I was bunking with the guy.• But come nightfall, they find themselves bunking with two or three people from different cultures.Origin bunk1 1. (1700-1800) Probably from bunker2. (1800-1900) bunk off3. (1900-2000) bunkum