sea crawfish

from WordNet (r) 3.0 (2006)

sea crawfish
    n 1: large edible marine crustacean having a spiny carapace but
         lacking the large pincers of true lobsters [syn: {spiny
         lobster}, {langouste}, {rock lobster}, {crawfish},
         {crayfish}, {sea crawfish}]

from The Collaborative International Dictionary of English v.0.48

Sea crawfish \Sea" craw"fish`\ Sea crayfish \Sea" cray"fish`\
   (Zool.)
   Any crustacean of the genus {Palinurus} and allied genera, as
   the European spiny lobster ({Palinurus vulgaris}), which is
   much used as an article of food. See {Lobster}.
   [1913 Webster]