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perennial ryegrass

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noun
  1. See under ryegrass.
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ryegrass

[rahy-gras, -grahs]
noun
  1. any of several European grasses of the genus Lolium, as L. perenne (perennial ryegrass), grown for forage in the U.S.
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Origin of ryegrass

First recorded in 1740–50; rye1 + grass
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018