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Any of various brown algae of the order Fucales growing chiefly on rocks in coastal areas, such as bladder wrack or Ascophyllum nodosum.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) any of various seaweeds that grow on rocks exposed at low tide
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any of several coarse brown seaweeds, commonly of the genus Fucus, that grow on sea-washed rocks.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||rockweed - coarse brown seaweed growing on rocks exposed at low tide|
brown algae - algae having the chlorophyll masked by brown and yellow pigments
fucus - any member of the genus Fucus
black rockweed, bladder fucus, Fucus vesiculosus, bladderwrack, tang - a common rockweed used in preparing kelp and as manure
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