Search Result for "lobster": 
Wordnet 3.0

NOUN (2)

1. flesh of a lobster;

2. any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae;


The Collaborative International Dictionary of English v.0.48:

Lobster \Lob"ster\, n. [AS. loppestre, lopystre prob., corrupted fr. L. locusta a marine shellfish, a kind of lobster, a locust. Cf. Locust.] (Zool.) 1. Any large macrurous crustacean used as food, esp. those of the genus Homarus; as the American lobster (Homarus Americanus), and the European lobster (Homarus vulgaris). The Norwegian lobster (Nephrops Norvegicus) is similar in form. All these have a pair of large unequal claws. The spiny lobsters of more southern waters, belonging to Palinurus, Panulirus, and allied genera, have no large claws. The fresh-water crayfishes are sometimes called lobsters. [1913 Webster] 2. As a term of opprobrium or contempt: A gullible, awkward, bungling, or undesirable person. [Slang] [Webster 1913 Suppl.] Lobster caterpillar (Zool.), the caterpillar of a European bombycid moth (Stauropus fagi); -- so called from its form. Lobster louse (Zool.), a copepod crustacean (Nicotho["e] astaci) parasitic on the gills of the European lobster. [1913 Webster]
WordNet (r) 3.0 (2006):

lobster n 1: flesh of a lobster 2: any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae
Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "lobster": Chilopoda, Chordata, Dungeness crab, Echiuroidea, Ectoprocta, Entoprocta, Japanese crab, Monoplacophora, Nemertinea, Phoronidea, blue point, clam, coquillage, crab, crawdad, crawfish, crayfish, gawk, klutz, langouste, limpet, littleneck clam, looby, lout, lubber, lug, lummox, lump, mussel, oaf, oyster, palooka, periwinkle, prawn, quahog, scallop, shellfish, shrimp, snail, soft-shell crab, steamer, whelk