Astacus
Pronunciation : As"ta*cus
Part of Speech : n.
Etymology : [L. astacus a crab, Gr. (Zo?l.)
Definition : Defn: A genus of crustaceans, containing the crawfish of fresh-water lobster of Europe, and allied species of western North America. See Crawfish.
Source : Webster's Unabridged Dictionary, 1913