“bunk” is a noun and verb with 9 meanings. Its most common meaning is: a long trough for feeding cattle.
bunk
noun
a long trough for feeding cattle
a bed on a ship or train; usually in tiers
a rough bed (as at a campsite)
unacceptable behavior (especially ludicrously false statements)
a message that seems to convey no meaning
beds built one above the other
verb
avoid paying
“beat the subway fare”
provide with a bunk
“We bunked the children upstairs”
flee; take to one's heels; cut and run
“If you see this man, run!”
“The burglars escaped before the police showed up”
Source: WordNet 3.1, Princeton University