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crab grass

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

First recorded in 1590–1600
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for crab grass

Historical Examples

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

    Up Terrapin River

    Opie P. Read

  • 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

  • In my opinion, crab-grass would answer well for pasture-grass in moist situations.

British Dictionary definitions for crab grass

crab grass

noun
  1. any of several coarse weedy grasses of the genus Digitaria, which grow in warm regions and tend to displace other grasses in lawns
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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