couch-grass

Noun

couch grass (uncountable)

1. A grass of species Elymus repens, usually considered a weed.
   • The roots of plants, disengaged from the soil in the process of tilling and cleaning it, are also employed as a vegetable manure. Some of these, however, as the couch grass, being very vivacious, would readily spring again: and therefore it is necessary that their vegetative powers be destroyed...1841, Jesse Buel, The Farmers' Instructor. Consisting of Essays, Practical Directions, and Hints for the Management of the Farm and the Garden. Originally Published in the Cultivator; Selected and...

   Synonyms:

   dog grass, quackgrass, quicken, quick grass, quitch, quitch grass, scutch grass, twitch, witchgrass