(1):

(n.) The bony cup which receives the head of the thigh bone.

(2):

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

(3):

(n.) A sucker of the sepia or cuttlefish and related animals.

(4):

(n.) One of the lobes of the placenta in ruminating animals.

(5):

(n.) The large posterior sucker of the leeches.

(6):

(n.) A vinegar cup; socket of the hip bone; a measure of about one eighth of a pint, etc.