As a Noun:
1. A person who is very inquisitive and always wants to know everything that is happening, particularly other people's affairs. Informal English = busybody, sticky-beak.
2. The part of your face which sticks out above your mouth. You use it for smelling and breathing. English = nose.
As a Verb or Adjective:
1. To ask lots of questions about other people's affairs or about things that do not concern you, often in a way that irritates them. English = (be) nosey, (be) inquisitive.