I. bunk 1 /bʌŋk/ BrE AmE noun
[ Sense 1-2: Date: 1700-1800 ; Origin: Probably from bunker ]
[ Sense 3: Date: 1800-1900 ; Origin: bunk off ]
[ Sense 4: Date: 1900-2000 ; Origin: bunkum ]
1 . [countable] a narrow bed that is attached to the wall, for example on a train or ship
2 . ( also bunk bed ) [often plural] one of two beds that are attached together, one on top of the other
3 . do a bunk British English informal to suddenly leave a place without telling anyone
4 . [uncountable] informal nonsense SYN bunkum :
What a load of bunk!
II. bunk 2 BrE AmE ( also bunk down ) verb [intransitive] informal
to sleep somewhere, especially in someone else’s house:
You can bunk down on the sofa for tonight.
bunk off (something) phrasal verb British English informal
to stay away from somewhere such as school or to leave somewhere early without permission SYN skive :
John and I used to bunk off school.