caboose(redirected from a caboose)
One's buttocks. A "caboose" is the last car on a freight train. Get your caboose in here, dinner's ready! Oh please, there's no way my big caboose will fit into pants that size.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. the buttocks. (From the name of the car at the end of a railroad train.) You just plunk your caboose over there on the settee and listen up to what I have to tell you.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.