acetabulum

English Thesaurus

1. the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint (noun.body)

hypernym	:	socket,
definition	:	a bony hollow into which a structure fits (noun.body)

part meronym	:	hipbone, innominate bone,
definition	:	large flaring bone forming one half of the pelvis; made up of the ilium and ischium and pubis (noun.body)

derivation	:	acetabular, cotyloid, cotyloidal,
definition	:	of the cup-shaped socket that receives the head of the thigh bone (adj.all)

derivation	:	acetabular, cotyloid, cotyloidal,
definition	:	of the cup-shaped socket that receives the head of the thigh bone (adj.all)