TROCHLEAR
trochlear, trochlear nerve, trochlearis, fourth cranial nerve
(noun) either of the two cranial nerves on either side that control the superior oblique muscles of the eyes
Source: WordNet® 3.1
Etymology
Adjective
trochlear (not comparable)
(anatomy) Shaped like, or resembling, a pulley; related to, or connected with, a trochlea.
Noun
trochlear (plural trochlears)
(anatomy) A trochlear muscle or nerve.
Source: Wiktionary
Troch"le*ar, n. Etym: [L. trochlea block or pulley.] (Anat.)
Definition: 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 Unabridged Dictionary 1913 Edition