Meaning of crayfish

Definition of crayfish

(noun) warm-water lobsters without claws; those from Australia and South Africa usually marketed as frozen tails; caught also in Florida and California
tiny lobster-like crustaceans usually boiled briefly
large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters

Other information on crayfish

WIKIPEDIA results for crayfish
Amazon results for crayfish