rockweed

rock·weed  (rkwd)

n.

Any of several coarse, brownish seaweeds of the genera Fucus and Ascophyllum that grow on rocks in coastal areas.

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rockweed [ˈrɒkˌwiːd]

n

(Life Sciences & Allied Applications / Plants) any of various seaweeds that grow on rocks exposed at low tide

Thesaurus

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 family Fucaceae, Fucaceae - small family of brown algae: gulfweeds; rockweeds 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 Ascophyllum nodosum, bladderwrack - similar to and found with black rockweed