• synonyms


[rahy-gras, -grahs]
  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

Examples from the Web for rye-grass

Historical Examples

  • Over-ripe clover, vetches, or rye-grass are liable to produce the disease.

    The New Gresham Encyclopedia


  • Sometimes a mixture of cocksfoot, English rye-grass, and white clover is used, or the two grasses alone are planted.

    Australia The Dairy Country

    Australia Department of External Affairs

  • He was also unfortunate with his lambs, which, during the same month, were folded on Italian rye-grass.

    The Stock-Feeder's Manual

    Charles Alexander Cameron

  • Darnel, dr′nel, n. an annual of the rye-grass genus, the tares of Scripture.

  • Our enlarged drawing of a seed with its envelopes is given to contrast with rye-grass seed, which is narrower and more pointed.

British Dictionary definitions for rye-grass


  1. any of various grasses of the genus Lolium, esp L. perenne, native to Europe, N Africa, and Asia and widely cultivated as forage crops. They have a flattened flower spike and hairless leaves
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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