- a very small green or yellow plant without flowers that spreads over wet surfaces, rocks, trees, etc.
- moss-covered walls
Word OriginOld English mos ‘bog or moss’, of Germanic origin; related to Dutch mos and German Moos.Definitions on the go
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Idioms
See moss in the Oxford Advanced American Dictionarya rolling stone gathers no moss
- (saying) a person who moves from place to place, job to job, etc. does not have a lot of money, possessions or friends but is free from responsibilities
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moss