— gubernacular , adj.
/gooh'beuhr nak"yeuh leuhm/ , n. , pl. gubernacula /-leuh/ . Anat., Zool.
a part or organ that directs the movement or course of another part.
[ 1655-65; gubernaculum rudder, equiv. to guberna ( re ) to steer (see GOVERN) + -culum -CULE 2 ]