A brown algae

• Brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
gulfweed \gulf"weed`\ (g[u^]lf"w[=e]d`), n. 1. A brown seaweed ( Sargassum bacciferum ) with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea. Syn: sargassum, sargasso, Sargassum bacciferum .

WordNet Word definitions in WordNet
n. brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea [syn: sargassum , sargasso , Sargassum bacciferum ]

Wiktionary Word definitions in Wiktionary
n. sargassum