dated slang A coffin. You're going to end up in a tree suit before you're 50 if you don't start improving your diet. Don't worry, boss. We'll put that stool pigeon in a tree suit before he ever makes it to court.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a wooden coffin. You’d better shut up if you don’t want to end up wearing a tree-suit.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.