acetabulum

/ˌæs.ɪˈtæb.jʊl.əm//ˌæs.əˈtæb.jəl.əm/

Learned borrowing from Latin acētābulum (“vinegar saucer, 1⁄48 congius”), from acētum (“vinegar”) + -bulum (“-bule: a vessel for”).

1(anatomy) The bony cup of the hip bone which receives the head of the femur.
2(zootomy) The cavity in which the leg of an insect is inserted at its articulation with the body.
3(zootomy) A sucker of the sepia or cuttlefish