moss
/mɔs; ?@ mɔ:s; mɔs/ n
1 [U, C] very small green or yellow flowerless plant growing in thick masses on damp surfaces or trees or stones 藓; 苔
moss-covered rocks, walls 长满青苔的岩石、 墙. Cf 参看 lichen.
2 (idm 习语) a rolling stone gathers no moss => roll2.