1. a person's record (as from a school or a job) that shows no evidence of any problems, broken rules, etc; a new beginning, usually achieved by removing any record of previous bad deeds or debts

1. Everyone who comes to this school starts with a clean slate.

2. The man had done some terrible things in the past, but he moved to a new town and changed his name. He was trying to make a new life with a clean slate.

3. If you pay me what you owe me, you’ll have wiped the slate clean