work over

verb3

1. •
   (slang) To physically attack in order to cause injury.

   • He'll talk, once we work him over.
2. •
   (slang) To subject (a person) to a severe scolding, interrogation, beating, etc.

   • The desk sergeant worked him over pretty good and finally turned him over to the detective squad. — 2007
3. •
   To improve a prototype, or first draft.

   • The estimated figures are not bad, but somebody will have to work them over.