deer horn knife

Meanings

1. A Chinese martial arts knife resembling two crossed crescents with all outward facing edges sharpened, and a handle on an inside arc of one of the crescents. The blade allows punching, slashing, and stabbing, as well as using the outward points as guards for defence to catch incoming weapons.
2. Used other than figuratively or idiomatically: A knife which uses deer horn as the material for the handle.

Etymology

From deer + horn + knife. (martial arts knife): From the shape of the knife resembling deer horns or deer antlers.