Definition of oarweed in US English:

oarweed

noun

  • A large brown kelp with a long hard stalk and a large oar-shaped frond divided into ribbon-like strips, growing on rocky shores.

    Genus Laminaria, class Phaeophyceae, in particular L. digitata

    Also called tangle
    • ‘An entirely natural extract, it is based on seaweed or tangle (oarweed), widely available around Scotland's shores and islands.’
    • ‘Closely related species in the Atlantic may be referred to as oarweed or more loosely as kelp or wrack.’

Pronunciation

oarweed

/ˈôrwēd/