poniard

The story

1. Latin · derived frompugnus“fist”
2. Old French · derived frompoing
3. Middle French · borrowed frompoignard
4. English todayponiard

Borrowed from Middle French poignard (whence -ard), from poing (“fist”), from Old French poing, from Latin pugnus (“fist”).

First known use, by meaning

• from 16th c. A dagger typically having a slender square or triangular blade.