Quitch grass
Quitch grass (kwich" grȧs`)
[Properly quick grass, being probably so called from its vigorous growth, or from its tenacity of life. See Quick, and compare Couch grass.]
(Botany) A perennial grass (Agropyrum repens) having long running rootstalks, by which it spreads rapidly and pertinaciously, and so becomes a troublesome weed. Also called couch grass, quack grass, quick grass, twitch grass. See Illustration in Appendix.