As a Noun:
1. A document signed by a lot of people which asks a government or other official group to do something. English = petition.
2. A formal written and signed request for a position in an organisation, such as a job or place at a college. English = application.
3. A document with more than one signature on it.
4. A list of signatures.
As a Verb or Adjective:
1. To sign a petition; to add your name to a petition.
2. To write and sign a formal written request for a position in an organisation, such as a job or place at a college. English = apply.
3. To add your name or signature to a list of other names; to make a list of names.