thighboneWiktionary 原文构词拆分thigh词根/词干+bone词根/词干演变路径（由近及远）英语继承自 ←中古英语 词源说明From late Middle English. Equivalent to thigh + bone.释义（英文）名词 Noun(anatomy) The bone that extends from the pelvis to the knee in humans; the femur.