Noun rock lobster has 2 senses
  1. spiny lobster, langouste, rock lobster, crayfish - warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California
    --1 is a kind of shellfish
    --1 is a part of
     spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish
  2. spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish - large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
    --2 is a kind of lobster
    --2 is a member of Palinurus, genus Palinurus
    --2 has parts: spiny lobster, langouste, rock lobster, crayfish
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