- any of an order (Laminariales) of large, coarse, brown algae
- ashes of seaweed, from which iodine is obtained
See kelp in American Heritage Dictionary 4
- Any of various brown, often very large seaweeds of the order Laminariales.
- The ash of these seaweeds, used as a source of potash and iodine.
Origin: Middle English culp
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