Medical Dictionary
quack grass
noun
Medical Definition of QUACK GRASS
: a European grass of the genus Agropyron (A. repens) that is naturalized throughout North America and has roots and rhizome with diuretic properties—called also couch grass, quitch, twitch, witchgrass
Seen & Heard
What made you want to look up quack grass? Please tell us where you read or heard it (including the quote, if possible).