| any of several edible crustaceans of the family Palinuridae, differing from the true lobsters in having a spiny shell and lacking the large pincers. |
| sea crayfish also sea crawfish n. See spiny lobster. |
| spiny lobster n. Any of various edible marine decapod crustaceans of the family Palinuridae, having a spiny carapace and lacking the large pincers characteristic of true lobsters. Also called crayfish, langouste, rock lobster, sea crayfish. |