单词	twitch grass
释义	twitch grass /twɪtʃ / noun [mass noun] Couch grass.The buckwheat would rid the field of twitch grass for a few years.... Couch, scutch or twitch grass looks like just a tuft of any grass, but underneath the ground the roots spread quickly to colonise borders. Often referred to as couch or twitch grass, quackgrass has a very broad blade and is difficult to control without killing the rest of the lawn. Origin Late 16th century: twitch, alteration of quitch.
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