" couch grass "

[Noun]  | "couch grass" | \ ˈkau̇ch- \

1: quack grass

2: any of several grasses that resemble quack grass in spreading by creeping rhizomes

Origin: 1578 ;

 Alteration of quitch;

[Noun]  | "couch" 

1: an article of furniture for sitting or reclining

2: a couch on which a patient reclines when undergoing psychoanalysis

3: the den of an animal (such as an otter)

Origin: 14th century ;

 Middle English couche bed, from Anglo-French kuche, from cucher;

[Noun]  | "quack grass" | \ ˈkwak- \

1: a European grass (Elymus repens synonym Agropyron repens) that is naturalized throughout North America and spreads by creeping rhizomes —called also couch grass, quitch, twitch, witchgrass

Origin: circa 1818 ;

 Alteration of quick (grass), alteration of quitch (grass);

[Noun]  | "couch"