noun
serious abrasion; wearing out
Refers to something being worn down or abraded through friction, often used for clothes or surfaces that have become threadbare or damaged from rubbing.
このジャケットは摩り枯らしがひどくて、もう着られない。
This jacket is so worn out from abrasion that I can't wear it anymore.
長年の使用で、机の表面に摩り枯らしができた。
Years of use have caused abrasion on the surface of the desk.
Compound of 摩り (from 摩る 'to rub') and 枯らし (from 枯らす 'to let wither'), literally 'rubbing to withering', describing the result of severe abrasion.