acetabulum

The bony cup of the hip bone which receives the head of the femur.

Holonyms: hip joint; hip bone < pelvis

The cavity in which the leg of an insect is inserted at its articulation with the body.

A sucker of the sepia or cuttlefish and related animals.

The large posterior sucker of the leeches.

One of the lobes of the placenta in ruminating animals.