n Any of various small, green, seedless plants growing on the ground or on the surfaces of trees, stones, etc.; now specifically, a plant of the phylum Bryophyta (formerly division Musci).
n (countable) A kind or species of such plants.
n (informal) Any alga, lichen, bryophyte, or other plant of seemingly simple structure.
n (now chiefly UK regional) A bog; a fen.
v (intransitive) To become covered with moss.
v (transitive) To cover (something) with moss.
n A surname.
n A village and civil parish (served by Moss and District Parish Council) in the Metropolitan Borough of Doncaster, South Yorkshire, England (OS grid ref SE5914).
n A coastal town and municipality in Viken county, Norway.
n A number of places in the United States:
n Former name of Moss Landing, California.
n An unincorporated community in Jasper County, Mississippi.
n An unincorporated community in Clay County, Tennessee.
n A former community in Gilmer County, West Virginia.
n (computing) Acronym of MIME Object Security Services.
n (software) Acronym of Map Overlay and Statistical System.
n (software) Acronym of Microsoft Office SharePoint Server.
n (trading) Acronym of Market Oriented Sector Selective talks.