plural bikinis
1
a
: a two-piece bathing suit worn by women that does not cover the midriff see also string bikini, tankini
b
: a short snug swimsuit worn by men
2
: a pair of low-cut briefs (see brief entry 2 sense 4)
Launched in May, the underwear brand for men and women includes bikinis, … G-strings and boxer briefs.—
Phyllis Furman
Phyllis Furman… ultra low-rise jeans with a built-in bikini or thong.—Sunday Tribune (South Africa)
—often used before another nounSunday Tribune (South Africa)Bikini briefs are usually lower than the true waist, often at the hips.—Clifford Pugh
Clifford PughExamples of bikini in a Sentence
Recent Examples on the Web
Most recently, Jenner shared images of her wearing a $7,500 vintage bikini by Chanel while yachting with friends in Greece.
—Starr Bowenbank, People.com, 19 July 2025
Irina Shayk is soaking up the sun in barely there bikinis while on vacation.
—Lori A Bashian, FOXNews.com, 17 July 2025
Tanis Jex-Blake, center, and supporters during a bikini protest in Edmonton, Alberta, on August 6, 2014.
—Marni Rose McFall, MSNBC Newsweek, 16 July 2025
The days of carelessly grabbing your beach bag, towel, and bikini and heading to the beach are long gone.
—Erica Wertheim Zohar, Forbes.com, 16 July 2025
See All Example Sentences for bikini
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Starr Bowenbank, People.com, 19 July 2025
Irina Shayk is soaking up the sun in barely there bikinis while on vacation.
—Lori A Bashian, FOXNews.com, 17 July 2025
Tanis Jex-Blake, center, and supporters during a bikini protest in Edmonton, Alberta, on August 6, 2014.
—Marni Rose McFall, MSNBC Newsweek, 16 July 2025
The days of carelessly grabbing your beach bag, towel, and bikini and heading to the beach are long gone.
—Erica Wertheim Zohar, Forbes.com, 16 July 2025
See All Example Sentences for bikini
Cite this Entry
“Bikini.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bikini. Accessed 22 Jul. 2025.
Copy CitationKids Definition
bikini
noun
bi·ki·ni
bə-ˈkē-nē 
: a scanty two-piece bathing suit for a girl or woman
Etymology
from French bikini "two-piece bathing suit," from Bikini, atoll in the Marshall Islands
Geographical Definition
Bikini
geographical name
Bi·ki·ni
bi-ˈkē-nē
island (atoll) of the Marshall Islands
Note: Bikini was the site of U.S. atomic bomb tests in 1946 and hydrogen bomb tests in 1954 and 1956.
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