abrasions

英[əb'reɪʒnz]

n. 磨损( abrasion的复数形式 ); 擦伤处; <喻>摩擦; <地质>磨蚀（作用）

n. an abraded area where the skin is torn or worn off\nn. erosion by friction\nn. the wearing down of rock particles by friction due to water or wind or ice