Found 2 items, similar to rockweed.
English → English (WordNet) Definition: rockweed rockweed n : coarse brown seaweed growing on rocks exposed at low tide
English → English (gcide) Definition: Rockweed Rockweed \Rock"weed`\, n. (Bot.) Any coarse seaweed growing on sea-washed rocks, especially Fucus. [1913 Webster]