| 单词 | onion couch |
| 释义 | > as lemmasonion couch onion couch n. a false oat grass of the variety Arrhenatherum elatius var. bulbosum, with bulb-like swollen basal internodes, occurring as a weed of arable land. ΘΚΠ the world > plants > particular plants > plants perceived as weeds or harmful plants > weed > [noun] > wild oat oateOE wild oat?a1500 haver1684 Tartary oat1790 onion twitch1875 onion couch1880 onion grass1880 1880 J. Britten & R. Holland Dict. Eng. Plant-names Onion Couch, Avena elatior... It is also called Onion Grass..and Onion Twitch. 1937 S. F. Armstrong Brit. Grasses (ed. 3) i. 5 In the weed known as ‘Onion Couch’..it is common to find several of the lower internodes enlarged and forming a chain of tubers. 1991 C. Stace New Flora Brit. Isles 1030 Var. bulbosum..has the basal, very short culm internodes swollen and corm-like; they are effective propagules in arable land (Onion Couch). < as lemmas |
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