/ Dictionary / Index B bikini: Meaning and Definition of Find definitions for: bi•ki•ni Pronunciation: (bi-kē'nē), [key] — pl. -nis. a very brief, close-fitting, two-piece bathing suit for women or girls. a very brief, close-fitting pair of bathing trunks for men or boys. Often,underwear briefs that are fitted low on the hip or below it. Bi•ki•ni Pronunciation: (bi-kē'nē), [key] — n. an atoll in the N Pacific, in the Marshall Islands: atomic bomb tests 1946. 3 sq. mi. (8 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bikini (Thesaurus) Bikila bikini cut Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language