driftweed

From drift +‎ weed.

driftweed (countable and uncountable, plural driftweeds)

1. Seaweed brought ashore by the wind or tide.
   • 1860, Charles Darwin, Journal of Researches into the Natural History and Geology […] :

     the high-water mark of driftweed on a sea-beach

• “driftweed”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.