Ryegrass definitions

rī'grăs'
Any of several grasses of the genus Lolium, native to Eurasia and often used for forage or for stabilizing soil.
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Any of a genus (Lolium) of annual or short-lived perennial grasses, often grown for lawns or as forage.
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(countable) Any of several species of tufted grasses of the genus Lolium.

Perennial ryegrass is an important species for lawn seed mixes.

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(uncountable) A collection of plants of any of the species, as in a lawn or field.

We seeded the meadow with ryegrass to provide better forage.

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Origin of ryegrass

Alteration of raygrass ray darnel (from Middle English rai) (perhaps alteration of Old French ivraie) (from Latin ēbriāca) (from feminine of ēbriācus drunk (from the plant's effects if ingested)) (from ēbrius inebriate) grass