shrimp-like decapod crustacean having two pairs of pincers; most are edible
source: WordNet 3.0
Any one of numerous species of large shrimplike Crustacea having slender legs and long antennæ. They mostly belong to the genera Pandalus, Palæmon, Palæmonetes, and Peneus, and are much used as food. The common English prawn is Palæmon serratus.