crab grass


an annual grass, Digitaria sanguinalis, common in cultivated and waste grounds and often occurring as a pest weed in lawns.

Origin of crab grass

First recorded in 1590–1600 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for crab grass

  • It was autumn, and streaks of gray could be seen in the crab-grass.

    Up Terrapin River|Opie P. Read
  • In my opinion, crab-grass would answer well for pasture-grass in moist situations.

  • In the economy of farmers entirely up against the crab-grass in the cotton-patch, the mule is mightier than the sword.

    Oklahoma Sunshine|Freeman E. (Freeman Edwin) Miller

British Dictionary definitions for crab grass

crab grass


any of several coarse weedy grasses of the genus Digitaria, which grow in warm regions and tend to displace other grasses in lawns
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012