Quitch grass : 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, quick grass, quick grass, twitch grass. See Illustration in Appendix.

Example:


Taxonomy
grass, QUITCH, Search, the Christian, Christian religion, Webster's Dictionary, Noah, English, free government, PayPal account, welcome donations, first things, truth, rights and privileges, free people, Preface, vigorous growth, Dog.

Defination from the web:
quitch-grass. QUITCH'-GRASS, n. [properly quick-grass, probably from its vigorous growth, or the difficulty of eradicating it.] Dog-grass; a species of grass which roots deeply and is not easily killed. ...