/ Dictionary / Index G gulfweed: Meaning and Definition of Find definitions for: gulf•weed Pronunciation: (gulf'wēd"), [key] — n. a coarse, olive-brown, branching seaweed, Sargassum bacciferum, common in the Gulf Stream and tropical American seas, characterized by numerous berrylike air vessels. any seaweed of the same genus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gulfweed (Thesaurus) Gulf War gulgul Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language