dammit

Short definition from Wiktionary

Interjection

1. 1
   Expressing anger, irritation, contempt, or disappointment.

Noun

1. 1
   The saying of the interjection, used as a general measure of anything.
2. 2
   A fastener used for military medals, name tags or other things that are pinned to a uniform; a clutch, a clutchback.