Definition of muckweed in English:

muckweed

noun

English Regional
  • 1A goosefoot, Chenopodium album, which grows on manure heaps.

  • 2A plant of muddy water, perhaps curled pondweed, Potamogeton crispus.

Origin

Late 18th century; earliest use found in William Marshall (bap. 1745, d. 1818), agricultural writer and land agent.