trochlear nerve: Meaning and Definition of

troch'lear nerve"

Pronunciation: [key]
— Anat. Anat.
  1. either one of the fourth pair of cranial nerves, consisting of motor fibers that innervate the superior oblique muscle of the upper part of the eyeball.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.