Phrasal Verb: Hear of

Meaning: Know of something or someone's existence

Example: I've HEARD OF the band, but don't know their music.

Meaning: Receive news, updates or information about someone

Example: I have HEARD nothing OF them since they moved house.

Meaning: In the negative, this can mean that someone refuse to accept, allow or acknowledge something

Example: I said it would be a positive step, but she wouldn't HEAR OF it.