fly trap(redirected from a fly-trap)
slang The mouth. You can always count on something stupid to come out of Eddie's fly trap.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. the mouth. Close your fly trap. You talk too much.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.