snowgrass noun2 •tough clumps of mountain grass that are covered in snow part of the year •(Australia) Any of various grasses of high-country areas of southeastern Australia (including Tasmania), especially perennials of the genus Poa.But there are few dry twigs or leaves to be found, and so he gathers a clump of snow grass and with his cigarette lighter he singes this grass, holding it close to him so that he can absorb its scent. — 1999 formssnowgrasses