noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A structure resembling or acting like a pulley.; In the elbow joint, the articular surface of the lower extremity of the humerus, grasped by the trochlear notch of the ulna.
2. 2
   A structure resembling or acting like a pulley.; A pulley-like cartilage through which the superior oblique muscle of the eyeball passes.

Etymology

Borrowed from Latin trochlea (“case or sheaf containing one or more pulleys, block”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.