knotgrass Meaning, Definition & Usage

  1. noun low-growing weedy grass with spikelets along the leaf stems
    Paspalum distichum.

WordNet


Knot"grass` noun
Definitions
  1. (Bot.) (a) a common weed with jointed stems (Polygonum aviculare); knotweed. (b) The dog grass. See under Dog. ✍ An infusion of Polygonum aviculare was once supposed to have the effect of stopping the growth of an animal, and hence it was called, as by Shakespeare, "hindering knotgrass."
    We want a boy extremely for this function, Kept under for a year with milk and knotgrass. Beau. & Fl.

Webster 1913