Seaweed. Obsolete. rare. (In quots. tr. Latin alga.)

= wreck, n.1 2.

Seaweed.

= wrack, n.2 3, sea-wrack, n. 2a, varec, n. 1. Latterly Scottish and northern dialect.

Marine vegetation, seaweed or the like, cast ashore by the waves or growing on the tidal seashore. (Cf. wreck, n.1 2, varec, n. 1)

Seaweed; algae. rare exc. North American regional and as the second element in compounds (esp. Irish moss: see Irish, adj. n.compounds 2).

As a mass noun: seaweed; (also) water or marsh plants; sedges.

Sea-wrack; = wrack, n.2 3.

collective. Seaweed, esp. any of the large coarse kinds cast up on the shore, as Fucus, Laminaria, etc. Sometimes applied spec. to Zostera marina.

collective. Any marine plants of the class Algæ (see alga, n.).

Sea-weed.

= sense 2.

(J. Lindley's name for) the former taxonomic group Algales, comprising the first division of the thallophytes, and containing the seaweeds and other…

= sense 2.