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oat grass

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noun
  1. any of several grasses of the genus Arrhenatherum or Danthonia, especially A. elatius, native to Europe, having a purplish-green flowering panicle.

Origin of oat grass

First recorded in 1570–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for oat grass

oat grass

noun
  1. any of various oatlike grasses, esp of the genera Arrhenatherum and Danthonia, of Eurasia and N. Africa
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