lobster: Meaning and Definition of

lob•ster

1. any of various large, edible, marine, usually dull-green, stalk-eyed decapod crustaceans of the family Homaridae, esp. of the genus Homarus, having large, asymmetrical pincers on the first pair of legs, one used for crushing and the other for cutting and tearing: the shell turns bright red when cooked.
2. See
3. any of various similar crustaceans, as certain crayfishes.
4. the edible meat of these animals.