ˈträklēə noun
( -s )
Etymology: New Latin, from Latin, sheaf of pulleys, from Greek trochileia, trochilea; akin to Greek trochos wheel, trechein to run — more at trochee
: an anatomical structure felt to resemble a pulley: as
a. : the articular surface on the medial condyle of the humerus that articulates with the ulna
b. : the fibrous ring in the inner upper part of the orbit through which the tendon of the trochlear muscle of the eye passes
c. : the smooth depression on the front of the femur between the condyles