Akademik

quack grass
noun
European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed
• Syn:
↑dog grass, ↑couch grass, ↑quackgrass, ↑quick grass, ↑witch grass, ↑witchgrass, ↑Agropyron repens
• Hypernyms: ↑wheatgrass, ↑wheat-grass

* * *

noun also quack
Etymology: quack grass alteration of quick grass; quack alteration of quick (V)
: couch grass 1a

* * *

Inland North and North Midland U.S.
a couch grass, Agropyron repens, a pernicious weed in cultivated fields.
[1810-20]

* * *

quack grass /kwak gräs/
noun
Couch grass
ORIGIN: Altered from quick, from ↑quitch1

* * *

quack grass,
a perennial, coarse, weedy grass which grows wild on sandy or gravelly soil; couch grass.
╂[American English, perhaps variant of quick grass]

* * *

n. another term for couch grass
Origin:
early 19th cent.: quack, variant of quick, northern English form of quitch

Useful english dictionary. 2012.