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2 ENTRIES FOUND:

rockweed

noun rock·weed \ˈräk-ˌwēd\

Definition of ROCKWEED

:  any of various coarse brown algae (order Fucales, especially genera Fucus, Ascophyllum, and Sargassum) growing in marine environments free-floating or attached to rocks

First Known Use of ROCKWEED

1583

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