Main Entry: nip·ple

Pronunciation: \ˈni-pəl\

Function: noun

Etymology: earlier neble, nible, probably diminutive of neb, nib

Date: circa 1530

1 : the protuberance of a mammary gland upon which in the female the lactiferous ducts open and from which milk is drawn
2 a : an artificial teat through which a bottle-fed infant nurses b : a device with an orifice through which the discharge of a liquid can be regulated
3 a : a protuberance resembling or suggesting the nipple of a breast b : a small projection through which oil or grease is injected into machinery
4 : a pipe coupling consisting of a short piece of threaded tubing

— nip·pled \-pəld\ adjective