俣 水制 股 鼠径 鼠径部 鼠蹊 鼠蹊部 鼠頚部
the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
股の内側部分と、しばしば外部性器を含む隣接した胴部分の付け根のひだ