'Sargasso Sea' definitions:

Definition of 'Sargasso Sea'

From: WordNet
noun
A vast area of the North Atlantic from the West Indies to the Azores that is dense with gulfweed

Definition of 'Sargasso Sea'

From: GCIDE
  • 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]