Hypertext Webster Gateway: "trochlea"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Trochlea \Troch"le*a\, n. [L., a case or sheaf containing one or
more pulleys, Gr. ?. See {Trochilics}.]
1. (Mach.) A pulley. [Obs.]
2. (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.
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