lumbrical

from The Collaborative International Dictionary of English v.0.48

Lumbrical \Lum"bric*al\, a. [Cf. F. lombrical. See {Lumbric}.]
   (Anat.)
   Resembling a worm; as, the lumbrical muscles of the hands of
   the hands and feet. -- n. A lumbrical muscle.
   [1913 Webster]