moss

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various green, usually small, nonvascular plants of the class Musci of the division Bryophyta.
2. n. A patch or covering of such plants.
3. n. Any of various other unrelated plants having a similar appearance or manner of growth, such as the club moss, Irish moss, and Spanish moss.
4. v. To cover with moss.

Century Dictionary and Cyclopedia

1. n. A small herbaceous plant of the natural order Musci, with simple or branching stems and numerous generally narrow leaves: usually applied to a matted mass of such plants growing together; also, in popular use, any small cryptogamic plant, particularly a lichen: as, Iceland moss, club-moss, rock-moss, coral-moss, etc., and sometimes small matted phanerogams, as Pyxidanthera.
2. n. Money: in allusion to the proverb, “a rolling stone gathers no moss.”
3. To cover with moss.
4. To become mossy; gather moss.
5. n. A swamp or bog; specifically, a peatbog or a tract of such bogs; also, peat.
6. n. An erroneous form of morse.
7. n. The widow's-cross, Sedum pulchellum.
8. n. The haircap-moss, Polytrichum juniperinum.
9. n. Same as golden moss .
10. n. Same as flowering moss .
11. To fill with moss, as the crevices between the logs in a logging-camp.

Wiktionary

1. n. Any of various small green plants of the division Bryophyta (formerly class Musci).
2. n. A clump or patch of such plants covering the ground or other surface.
3. n. Any of various other non-related plants, algae, or fungi of a similar appearance.
4. v. To become covered with moss.
5. v. To cover (something) with moss.

GNU Webster's 1913

1. n. A cryptogamous plant of a cellular structure, with distinct stem and simple leaves. The fruit is a small capsule usually opening by an apical lid, and so discharging the spores. There are many species, collectively termed Musci, growing on the earth, on rocks, and trunks of trees, etc., and a few in running water.
2. n. A bog; a morass; a place containing peat.
3. v. To cover or overgrow with moss.

WordNet 3.0

1. n. tiny leafy-stemmed flowerless plants