1. [noun] 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 division Bryophyta (formerly Musci).
2. [noun] (countable) A kind or species of such plants.
3. [noun] (informal) Any alga, lichen, bryophyte, or other plant of seemingly simple structure.
4. [noun] (now chiefly UK regional) A bog; a fen.
5. [verb] (intransitive) To become covered with moss.
6. [verb] (transitive) To cover (something) with moss.
7. [noun] (computing) Acronym of w:MIME Object Security Services.
8. [noun] (software) Acronym of w:Map Overlay and Statistical System.
9. [noun] (software) Acronym of w:Microsoft Office SharePoint Server.
10. [noun] (trading) Acronym of w:Market Oriented Sector Selective talks.
11. [noun] Tiny leafy-stemmed flowerless plants.
