abrasion
abra·sion
noun \ə-ˈbrā-zhən\Definition of ABRASION
1
: wearing, grinding, or rubbing away by friction
2
a : the rubbing or scraping of the surface layer of cells or tissue from an area of the skin or mucous membrane; also : a place so abraded b : the mechanical wearing away of the tooth surfaces by chewing
Learn More About
Seen & Heard 
What made you want to look up abrasion? Please tell us where you read or heard it (including the quote, if possible).
