ETYM Cf. Dutch kabuis, kombuis, Dan. kabys, Swed. kabysa, German kabuse a little room or hut. The First part of the word seems to be allied to W. cab cabin, booth. Related to Cabin.
A car used on freight or construction trains for brakemen, workmen, etc.; traditionally, the last car on the train.
A freight-train car attached usually to the rear mainly for the use of the train crew.
American, guard's or engineer's van on goods train.

(Slang) Rear end; buttocks.

Kitchen on the deck of a ship.
Ship's galley.