(Anatomy)the socket of the hip bone, into which the head of the femur fits (剖)髋臼;关节窝 ■(Zoology)any cup-shaped structure, especially a sucker (动)臼状结构(尤指吸盘)
语源
late Middle English (denoting a vinegar cup, hence a cup-shaped cavity): from Latin, from acetum 'vinegar' + -abulum, denoting a container