lumbricus /lum-brīˈkəs/ noun A worm of the very common genus of earthworms Lumbricus, giving its name to the family Lumbricidae /-brisˈi-dē/ to which all British earthworms belong ORIGIN: L lumbrīcus lumˈbrical (or /-brīˈ/) adjective Wormlike noun (for lumbrical muscle) one of certain muscles of the hand and foot used in flexing the digits (also lumbricāˈlis) lumbriciform /-brisˈ/ or lumˈbricoid (or /-brīˈ/) adjective Wormlike |