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
The most daring image featured a woman who was topless, except for a pair of suspenders that lay across her nipples.
—
Angela Andaloro, PEOPLE, 26 Nov. 2025
In some cases, backless bras take the form of sticky bras, boob tape, and nipple covers for fully open backs; U-plunge styles for deep fronts; low-back strapless bras for gowns that dip; and convertible options that can be reconfigured depending on the cut.
—Malia Griggs, Glamour, 26 Nov. 2025
Why did guys wearing tank tops that fully exposed their nipples fall out of style?
—Emma Specter, Vogue, 21 Nov. 2025
When this happens, the feline’s nipples become pinker and more prominent.
—Maria Azzurra Volpe, MSNBC Newsweek, 17 Nov. 2025
See All Example Sentences for nipple
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Angela Andaloro, PEOPLE, 26 Nov. 2025
In some cases, backless bras take the form of sticky bras, boob tape, and nipple covers for fully open backs; U-plunge styles for deep fronts; low-back strapless bras for gowns that dip; and convertible options that can be reconfigured depending on the cut.
—Malia Griggs, Glamour, 26 Nov. 2025
Why did guys wearing tank tops that fully exposed their nipples fall out of style?
—Emma Specter, Vogue, 21 Nov. 2025
When this happens, the feline’s nipples become pinker and more prominent.
—Maria Azzurra Volpe, MSNBC Newsweek, 17 Nov. 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 3 Dec. 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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