register something with someone or something
to record the existence of something with someone or something. Did you register your new stereo with the manufacturer? If you bring any packages into this store, please register them with the manager.
register with someone
1. Lit. to sign up with someone. You will have to register with the lady at the front desk. I registered with the attendant when I came in.
2. Fig. [for something] to be realized or understood by someone. Suddenly, the import of what she had said registered with me. My name did not register with her, and I had to explain who I was.