Kelp
Kelp (kelp) , noun
[Formerly kilpe; of unknown origin.]
1.
The calcined ashes of seaweed, -- formerly much used in the manufacture of glass, now used in the manufacture of iodine.
2.
(Botany) Any large blackish seaweed.
Laminaria is the common kelp of Great Britain; Macrocystis pyrifera and Nereocystis Lutkeana are the great kelps of the Pacific Ocean.
Collocations (2)
Kelp crab (Zoology) , a California spider crab (Epialtus productus), found among seaweeds, which it resembles in color.