: any of several large brown algae especially of the genus Laminaria including some used as a source of iodine and other chemicals, as fertilizer, and sometimes as food

Word History


English dialect oare, ore seaweed (from Middle English ware, from Old English wār) + English weed; akin to Old English wīr myrtle, Middle Dutch wier seaweed, and probably to Old Norse visk wisp

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near oarweed

Cite this Entry

“Oarweed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oarweed. Accessed 24 Apr. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!