trochlear Meaning, Definition & Usage

  1. noun either of the two cranial nerves on either side that control the superior oblique muscles of the eyes
    fourth cranial nerve; trochlearis; trochlear nerve.

WordNet

Troch"le*ar noun
Etymology
L. trochlea block or pulley.
Definitions
  1. (Anat.) Shaped like, or resembling, a pulley; pertaining to, or connected with, a trochlea; as, a trochlear articular surface; the trochlear muscle of the eye.

Webster 1913