tree suit

tree suit

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.
See also: suit, tree

tree-suit

n. a wooden coffin. You’d better shut up if you don’t want to end up wearing a tree-suit.