särˈga(ˌ)sō, sȧˈg-, -gaa(- noun
( -s )
Etymology: Portuguese sargaço, probably from sargaço, sargaça rockrose, perhaps from Latin salicastrum, a wild vine found in willow-thickets, from salic-, salix willow — more at sallow
1. also sargasso weed : a seaweed of the genus Sargassum : gulfweed
2. : a mass of floating vegetation consisting chiefly of sargasso