[n] the wearing down of rock particles by friction due to water or wind or ice
[n] erosion by friction
[n] an abraded area where the skin is torn or worn off
See Also...
eating away, eroding, erosion, friction, graze, lesion, rope burn, rubbing, wearing, wearing away, wound
Misc. Definitions
\Ab*ra"sion\, n. [L. abrasio, fr. abradere. See {Abrade}.]
1. The act of abrading, wearing, or rubbing off; the wearing away by friction; as, the abrasion of coins.
2. The substance rubbed off. --Berkeley.
3. (Med.) A superficial excoriation, with loss of substance under the form of small shreds. --Dunglison.