the.com/rye grass

means A tough, fast-germinating grass (ryegrass genus Lolium) widely seeded into lawns, pastures, and sports fields for its quick cover and wear tolerance.

from The 'rye' here isn't the grain exactly — it traces to Old English ryge, the same root as the cereal rye, likely because the grass's seed heads were thought to resemble rye's. 'Grass' is just Old English græs, plain and ancient. The plant itself (Lolium) has been tangled with folklore for ages — its wild cousin, darnel, was once called 'false wheat' and suspected of causing dizziness or 'drunkenness' when it infested grain, giving Lolium temulentum its species name (temulentus = drunken). So the grass family carries a long reputation, half useful forage, half suspected troublemaker.