any of a family (Congridae, order Anguilliformes) of large saltwater eels, with a long dorsal fin, sharp teeth, and powerful jaws; esp., any of an edible genus (Conger) of eels
Origin:
ME < OFr congre < LL congrus, for L conger < Gr gongros, conger, prob. < IE base *geng-, *gong-, a lump, rounded object