kelp

名词 kelp:

1. large brown seaweeds having fluted leathery fronds

kelp

n.（名词）
Any of various brown, often very large seaweeds of the order Laminariales.
巨藻：昆布目植物，有深浅各种褐色，通常是大型海草中的一种
The ash of these seaweeds, used as a source of potash and iodine.
海草灰：这种海草的灰常作为提炼钾和碘的原料

来源：
Middle English culp
中古英语 culp