Definition of lernaea:
(N) :
a genus of copepod crustaceans whose members are commonly called anchor worms and are parasitic on freshwater fishes.
(N) :
an ancient and significant Greek festival held annually at Lerna, near Argos, by the Argives, primarily in honor of the goddess Demeter who was worshiped under the epithets "Lernaia" and "Prosymna" at the ancient sacred grove that extended to the rivers Amymone and Pontinos.