cabooseEnglishOxford Dictionary of Englishcaboose /kəˈbuːs / ▸ noun 1 North American English a railway wagon with accommodation for the train crew, typically attached to the end of the train. 2 US English informal a person's buttocks: she took one big jump and then fell right on her caboose. 3 archaic a kitchen on a ship's deck. – ORIGIN mid 18th century: from Dutch kabuis, kombuis, of unknown origin.