1the small projection in which the mammary ducts of female mammals terminate and from which milk can be secreted.
the vestigial structure in a male that corresponds to the nipple of a female mammal.
North American the teat of a feeding bottle:it is crucial to remove the cap or nipple of the baby’s bottle before heating
2a small projection on a device, especially one from which oil or other fluid is dispensed:the centralized greasing point comprises a bank of seven nipples
a short section of pipe with a screw thread at each end for coupling:install a threaded nipple between the valve outlet and the shut-off inlet
