iliacus
noun [ C ] anatomy specialized uk/ɪˈlaɪ.ə.kəs/ us/ɪˈlaɪ.ə.kəs/ iliaci /ɪˈlaɪ.ə.ki/ /ɪˈlaɪ.ə.ki/
髂肌，胯肌
a triangular muscle attached to the iliac fossa (= the large, smooth part of the pelvis) that allows the thigh to bend forward and turn