Acetabulum
ACETABULUM, the Latin word for a vinegar cup, an ancient Roman vessel, used as a liquid measure (equal to about half a gill); it is also a word used technically in zoology, by analogy for certain cup-shaped parts, e.g. the suckers of a mollusc, the socket of the thigh-bone, etc.; and in botany for the receptacle of Fungi.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)
