From Longman Dictionary of Contemporary Englishcrayfishcray‧fish /ˈkreɪˌfɪʃ/ noun (plural crayfish) [countable, uncountable] HBDFa small animal like a lobster that lives in rivers and streams, or the meat from this animal
Examples from the Corpus
crayfish• The invertebrates include quite large creatures, such as freshwater shrimps and crayfish.• I then went off for lunch which was soup and crayfish.• Many invertebrates, such as crayfish, can not survive without a certain level of calcium, and are completely absent.• Cooks in the households of Norman seaside towns do not, he says, have freshwater crayfish at their disposal.• They are like crayfish, unable to walk in a straight line.• For instance, it softens the shells of crayfish, and exposes them to disease.• There are the crayfish and the creamy quenelles and the charcuterie which still belong a little to Lyon.• But the crayfish tail circuit, more redundant than it perhaps needed to be, was error free.Origin crayfish (1300-1400) Old French crevice; influenced by fish 