Definify.com

Webster 1913 Edition

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Noun.

[L., a case or sheaf containing one or more pulleys, Gr. [GREEK]. See

(Mach.)

A pulley.

[Obs.]

(Anat.)

A pulley, or a structure resembling a pulley;

as, the

trochlea

, or pulleylike end, of the humerus, which articulates with the ulna; or the

trochlea

, or fibrous ring, in the upper part of the orbit, through which the superior oblique, or trochlear, muscle of the eye passes.

Noun.

[L. a pulley, from Gr. to run.] A pulley-like cartilage, through which the tendon of the trochleary muscle passes.

trochlea ‎(plural trochleas or trochleae)

(anatomy) A structure resembling a pulley, typically in reference to the area connecting the upper and lower arm.