n. A wooden case or compartment in a vessel, a sleeping-car, etc., and sometimes in a dwelling-house, used as a sleeping-berth.n. A piece of timber placed across a sled to sustain a heavy weight.To occupy a bunk; hence, to occupy a bed; sleep: as, the two boys bunked together.n. The cross-beam on which the logs rest on a log-car or truck.n. A log-car or truck.To place upon the bunks: as, to bunk a log.To make off; run away; decamp.