a. 滑车的

[医] 滑车的; 滑车神经的

[ noun ]
either of the two cranial nerves on either side that control the superior oblique muscles of the eyes
<noun.body>

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}.