Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


noun rye·grass \ˈrī-ˌgras\

Definition of ryegrass

  1. :  any of several grasses (genus Lolium); especially :  either of two grasses (L. perenne and L. multiflorum) that are used as lawn and pasture grasses and as cover crops

Learn More about ryegrass

Seen and Heard

What made you want to look up ryegrass? Please tell us where you read or heard it (including the quote, if possible).