WordReference Random House Learner's Dictionary of American English © 2026
ˈcrab ˌgrass, n. [uncountable]
  1. Plant Biologya weed grass that grows in thick patches on lawns.

WordReference Random House Unabridged Dictionary of American English © 2026
crab′ grass′, 
  1. Plant Biologyan annual grass, Digitaria sanguinalis, common in cultivated and waste grounds and often occurring as a pest weed in lawns.
  • 1590–1600

'crab grass' also found in these entries (note: many are not synonyms or translations):
pull - riot - weed

Forum discussions with the word(s) "crab grass" in the title:


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