• synonyms


See more synonyms for gulfweed on Thesaurus.com
  1. a coarse, olive-brown, branching seaweed, Sargassum bacciferum, common in the Gulf Stream and tropical American seas, characterized by numerous berrylike air vessels.
  2. any seaweed of the same genus.
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Origin of gulfweed

First recorded in 1665–75; gulf + weed1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for gulfweed

algae, tangle, gulfweed, rockweed

Examples from the Web for gulfweed

Historical Examples of gulfweed

  • Some sea-horses cling by their tails to gulfweed or sea-wrack.

    A Guide to the Study of Fishes, Volume 1 (of 2)

    David Starr Jordan

  • Sea-lentil is a name sometimes applied to the gulfweed Sargassum vulgare.

British Dictionary definitions for gulfweed


  1. any brown seaweed of the genus Sargassum, esp S. bacciferum, having air bladders and forming dense floating masses in tropical Atlantic waters, esp the Gulf StreamAlso called: sargasso, sargasso weed
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012