Definitions from Wiktionary ( )

▸ noun:  (anatomy) The projection of a mammary gland from which, on female therian mammals, milk is secreted.
▸ noun:  The nipple (definition 1) and the areola together.
▸ noun:  A mechanical device through which liquids or gases can be passed in a regulated manner.
▸ noun:  An artificial nipple (definition 1) used for bottle-feeding infants.
▸ noun:  Any small physical protrusion, such as the lumps on the F and J keys on computer keyboards.
▸ noun:  Any small physical protrusion on an automotive, a machine part or any other part that fits into a groove on another part.
▸ noun:  (now chiefly historical) A perforated segment that fits into part of the breech of a muzzle-loading gun, on which the percussion cap is fixed.
▸ noun:  (plumbing, chiefly US) A short tube threaded at both ends, used as a connector.
▸ noun:  (cycling) An internally threaded piece which holds a bicycle spoke in place on the rim.
▸ noun:  (computing, humorous) A pointing stick.
▸ verb:  (transitive) To fit (a baby's bottle, etc.) with a nipple.
▸ verb:  (transitive) To give one's nipple to (a baby) to allow breastfeeding.

---

▸ Word origin

▸ Words similar to nipple
▸ Usage examples for nipple

▸ Idioms related to nipple
▸ Wikipedia articles (New!)
▸ Popular adjectives describing nipple
▸ Words that often appear near nipple
▸ Rhymes of nipple

▸ Invented words related to nipple