Sargasso \Sar*gas"so\, n. [Sp. sargazo seaweed.]

(Bot.) The gulf weed. See under Gulf. [1913 Webster]

Sargasso Sea, a large tract of the North Atlantic Ocean where sargasso in great abundance floats on the surface. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

sargasso

Source: WordNet (r) 2.0
 

Sargasso \Sar*gas"so\, n. [Sp. sargazo seaweed.]

(Bot.) The gulf weed. See under Gulf.

Sargasso Sea, a large tract of the North Atlantic Ocean where sargasso in great abundance floats on the surface.

Source: Webster's Revised Unabridged Dictionary (1913)