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crab·grassor crab grass (krăb′grăs′)
Any of certain annual grasses of the genus Digitaria, having prostrate stems that root at the nodes and widely naturalized in North America as weeds in lawns and agricultural fields.
(Plants) any of several coarse weedy grasses of the genus Digitaria, which grow in warm regions and tend to displace other grasses in lawns
a weed grass, Digitaria sanguinales, that roots vigorously from the lower stem joints and grows in thick patches on lawns and uncultivated areas.
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|Noun||1.||crab grass - grasses with creeping stems that root freely; a pest in lawns|
grass - narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay
crowfoot grass, Dactyloctenium aegypticum, Egyptian grass - a creeping grass with spikes like fingers