any of various grasses, especially Agropyron repens, known chiefly as troublesome weeds and characterized by creeping rootstocks that spread rapidly.
Origin of couch grass
1570–80; couch, variant of quitch
Also called quitch, quitch grass.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a grass, Agropyron repens, with a yellowish-white creeping underground stem by which it spreads quickly: a troublesome weedSometimes shortened to: couch Also called: scutch grass, twitch grass, quitch grass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012