Quick definitions from WordNet (crawfish)
▸ noun: small freshwater decapod crustacean that resembles a lobster
▸ noun: tiny lobster-like crustaceans usually boiled briefly
▸ noun: large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
▸ verb: make a retreat from an earlier commitment or activity ("We'll have to crawfish out from meeting with him")
▸ Also see crawfish
▸ noun: small freshwater decapod crustacean that resembles a lobster
▸ noun: tiny lobster-like crustaceans usually boiled briefly
▸ noun: large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
▸ verb: make a retreat from an earlier commitment or activity ("We'll have to crawfish out from meeting with him")
▸ Also see crawfish