moss — Plants and Trees moss /mɒs/ noun CEFR A2 A small soft green plant that grows on wet ground, rocks, or trees. “Green moss covered the old stone wall.” Related words in this scene potplantflowerseedtreegrassleafbranchsoilbushweedgrowfruitvegetableharvestblossomrootstempetalbudgardentrunkbarkthornsunlightmeadowpicktalltwigsproutvinepollen Practice this word Create worksheet