General Definition:
1. To hold something (eg, an ice-cream cone, a microphone) near your mouth and move it to and fro towards the person you are talking to, or any thing or any action directly or indirectly associated with this kind of action, especially interviewing or reporting.
As a Noun:
1. A news interview made by using a microphone, especially one made by a television news journalist.
2. A person whose job is to interview people using a microphone for television news. English = interviewer, reporter.
As a Verb or Adjective:
1. To interview someone using a microphone, especially a television news journalist.