trochlear

1. Of, resembling, or situated near a trochlea.
2. Of or relating to the trochlear nerve.
3. Botany. Shaped like a pulley.

1. Of, resembling, or situated near a trochlea.
2. Of or relating to the trochlear nerve.

1. pertaining to a trochlea.
2. pertaining to the fourth cranial (trochlear) nerve.

• t. nerve
• t. notch — semicircular notch in the proximal extremity of the ulna, articulates with the trochlea of the humerus, overhung by the ‘beak’ of the ulna's anconeal process.
• t. orbit — a flat piece of cartilage, or loop of fibrous tissue, embedded in the dorso-medial wall of the orbit close to the edge of the orbit; acts as a pulley for the dorsal oblique muscle.
• t. talus — the proximal articular surface on the talus, articulates with the tibia.

The noun has one meaning:

Meaning #1: either of the two cranial nerves on either side that control the superior oblique muscles of the eyes
  Synonyms: trochlear nerve, trochlearis, fourth cranial nerve