noun Inland North and North Midland U.S..
a couch grass, Agropyron repens, a pernicious weed in cultivated fields.
Origin of quack grass
First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for quack grass
Historical Examples of quack grass
By creeping root-stocks, as June grass, quack-grass and toad-flax.Seeds of Michigan Weeds
W. J. (William James) Beal
Word Origin for quack grass
C19: a variant of quick 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