Trochlear \Troch"le*ar\, n. [L. trochlea block or pulley.]

(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.

Trochlear nerve. See Pathetic nerve, under Pathetic.

Source: Webster's Revised Unabridged Dictionary (1913)