/ Dictionary / Index S sargasso: Meaning and Definition of Find definitions for: sar•gas•so Pronunciation: (sär-gas'ō), [key] — pl. -sos. a gulfweed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sargasso (Thesaurus) Sarg Sargasso Sea Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language