Attrition - Definition
attrition
n 1: erosion by friction [syn: abrasion, attrition,
corrasion, detrition]
2: the wearing down of rock particles by friction due to water
or wind or ice [syn: grinding, abrasion, attrition,
detrition]
3: sorrow for sin arising from fear of damnation [syn:
attrition, contrition, contriteness]
4: a wearing down to weaken or destroy; "a war of attrition"
5: the act of rubbing together; wearing something down by
friction