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

Digitaria, genus Digitaria - crab grass; finger grass

Digitaria ischaemum, smooth crabgrass - a weed

Digitaria sanguinalis, hairy finger grass, large crabgrass - a European forage grass grown for hay; a naturalized weed in United States