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
Examples of nipple in a Sentence
Recent Examples on the Web
So there were nipple covers or, in some cases, full breasts.
—
Alex Ritman, Variety, 1 July 2025
The bottles and nipples came out very clear and without a cloudy look.
—Olivia Campbell, Parents, 24 June 2025
As Emmett Preciado lay back on a massage table, a halo of light circled his bare torso as Leola Davis brushed soapy water on faint red lines under his nipples.
—Jireh Deng, Los Angeles Times, 5 June 2025
Pregnant dogs may also gain weight or grow a belly, and may show changes in the appearance of their nipples.
—Maria Azzurra Volpe, MSNBC Newsweek, 20 June 2025
See All Example Sentences for nipple
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Alex Ritman, Variety, 1 July 2025
The bottles and nipples came out very clear and without a cloudy look.
—Olivia Campbell, Parents, 24 June 2025
As Emmett Preciado lay back on a massage table, a halo of light circled his bare torso as Leola Davis brushed soapy water on faint red lines under his nipples.
—Jireh Deng, Los Angeles Times, 5 June 2025
Pregnant dogs may also gain weight or grow a belly, and may show changes in the appearance of their nipples.
—Maria Azzurra Volpe, MSNBC Newsweek, 20 June 2025
See All Example Sentences for nipple
Cite this Entry
“Nipple.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nipple. Accessed 22 Jul. 2025.
Copy CitationKids Definition
nipple
noun
nip·ple
ˈnip-əl 
1
: the small protruding part of the gland that in females produces milk and from which a baby or young mammal sucks milk
2
: something resembling a nipple
especially
: the mouthpiece of a bottle from which an infant feeds
Medical Definition
nipple
noun
nip·ple
ˈnip-əl
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
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