gulfweed
Americannoun
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a coarse, olive-brown, branching seaweed, Sargassum bacciferum, common in the Gulf Stream and tropical American seas, characterized by numerous berrylike air vessels.
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any seaweed of the same genus.
noun
Etymology
Origin of gulfweed
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Since 2011, scientists have tracked the recurring appearance of the Great Atlantic Sargassum Belt, a massive band of gulfweed that moves from the equator toward the Caribbean during periods of strong easterly winds.
From Science Daily ● Nov. 19, 2025
This gulfweed, the swimming gulfweed or berry carrier, is the chief substance making up this immense shoal.
From Twenty Thousand Leagues Under the Sea by F. P. Walter
The name Sargasso comes from the Spanish word sargazo, meaning gulfweed.
From Twenty Thousand Leagues Under the Sea by F. P. Walter
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
