Definition of pigweed in US English:

noun

• 1An amaranth that grows as a weed or is used for fodder.

  Genus Amaranthus, family Amaranthaceae: several species, in particular A. retroflexus and A. albus

  Example sentences

  • ‘Spartan herbicide has provided excellent control of troublesome broadleaf weeds, such as kochia, Russian thistle, and pigweed in no-till sunflower for the past several years.’
  • ‘When The Ohio State University weed scientists announced they had discovered ALS-resistant smooth pigweed this winter, it was hard to get very excited about the news.’
  • ‘All summer we fight Bermuda grass, nut grass, crabgrass, goosegrass, Dallis grass, spurge, pigweed and others.’
  • ‘Several common weeds, including pigweed, lamb's quarters, and kochia, have been reported to be hosts for the pathogen.’
  • ‘Sometimes, a single weed plant - of pigweed, for example - can produce 500,000 seeds.’

• 2

  another term for lamb's-quarters

  Example sentences

  • ‘Fat Hen, (also known as: white goosefoot, lamb's quarters, lambsquarters, or pigweed) is a fast-growing, upright, weedy annual species of goosefoot, very common in temperate regions/’
  • ‘Lambsquarters (Chenopodium album, also called fat hen, goosefoot, or pigweed) are a. member of the same family as chard and beets.’
  • ‘The fungus kills fat hen - also known as pigweed - a weed which is a serious problem for European farmers.’