spiny lobster

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various edible marine decapod crustaceans of the family Palinuridae, having a spiny carapace and long antennae and lacking claws.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a crustacean superficially resembling a true lobster, belonging to the Palinuridae family.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California
• noun large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters