Wiktionary
pistol shrimp
n. An alpheid shrimp which has asymmetrical claws, the larger of which can be used to produce a loud snapping sound.
WordNet
pistol shrimp
n. small shrimp that makes a snapping noise with one of their enlarged chelae [syn: snapping shrimp]
Usage examples of "pistol shrimp".
The pistol shrimp possesses one of nature's most innovative designs.