Definition of rockweed Rockweed

rock•weed

We found 5 definitions of rockweed from 4 different sources.

What does rockweed mean?

Noun Plural: rockweeds
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

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rockweed (Noun)
Ascophyllum nodosum, a seaweed also known as kelp.
rockweed (Noun)
Fucus vesiculosus, a similar seaweed also known as bladderwrack.