Finger grass Meaning, Definition & Usage

  1. noun grasses with creeping stems that root freely; a pest in lawns
    crabgrass; crab grass.
  2. noun any grass of the genus Chloris; occurs in short grassland especially on waste ground or poor soils

WordNet

Definitions
  1. (Bot.), a kind of grass (Panicum sanguinale) with slender radiating spikes; common crab grass. See Crab grass, under Crab.

Webster 1913