What is the meaning of Crayfish?

Any of numerous freshwater decapod crustaceans in superfamily Astacoidea or Parastacoidea, resembling the related lobster but usually much smaller.

  1. A freshwater crustacean (family Cambaridae), sometimes used as an inexpensive seafood or as fish bait.

A freshwater crustacean (family Cambaridae), sometimes used as an inexpensive seafood or as fish bait.

A rock lobster (family Palinuridae).

A freshwater crayfish (family Parastacidae), such as the gilgie, marron, or yabby.

The species Thenus orientalis of the slipper lobster family (Scyllaridae).

To catch crayfish.

Alternative form of crawfish (to backpedal, desert, or withdraw)

Source: wiktionary.org