quackgrass

== English == === Alternative forms === quack grass, quack-grass === Etymology === Alteration of quickgrass, a variant of quitchgrass. === Noun === quackgrass (countable and uncountable, plural quackgrasses) (chiefly Canada, US) Couch grass (a species of grass, Elymus repens). [from 19th c.] ==== Translations ====