Meaning of “wear (sth) away” - Learner’s Dictionary

wear (sth) away

phrasal verb with wear uk us /weər/ verb (past tense wore, past participle worn)

to disappear after a lot of time or use, or to make something disappear in this way:

The words on the gravestone had worn away completely.

(Definition of “wear (sth) away” from the Cambridge Learner’s Dictionary © Cambridge University Press)