clincher(redirected from clinchers)
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The final thing that completes something, possibly in a negative way. I'd been having a wonderful birthday already, and being surprised by my whole family at dinner was the clincher. Getting caught in a downpour was the clincher on a terrible day.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. the final element; the straw that broke the camel’s back. (see also capper.) The clincher was when the clerk turned up the volume.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.