- a N temperate perennial dune grass, Elymus arenarius, with a creeping stem and rough bluish leaves
C18: probably a respelling (influenced by its genus name, Elymus) of lime 1, referring to its stabilizing effect (like lime in mortar)
Examples from the Web for lyme grass
It feeds on the stems of lyme-grass (Elymus arenarius) in May and June.The Moths of the British Isles, First Series
The sea-reed's and the lyme-grass's blue-green sharp blades gave some variety to the white sand.
Suddenly, from one of these where there was no lyme-grass to keep down the sand, there arose as it were a thick smoke.
Only the yellow sand along the shore remained as it was; it has no flowers to deck itself with, and lyme-grass is all its finery.Tales of Two Countries