Trochanter \Tro*chan"ter\, n. [NL., fr. Gr. ?.] 1. (Anat.) One of two processes near the head of the femur, the outer being called the {great trochanter}, and the inner the {small trochanter}. 2. (Zo["o]l.) The third joint of the leg of an insect, or the second when the trochantine is united with the coxa.