As a Noun: 1. Your name when you write it in your own characteristic way. English = signature. 2. A document which has been signed or which has space provided for a signature somewhere on it. 3. A legally binding agreement in the form of a document which has been or must be signed. English = contract. 4. A formal written request for a position in an organisation, such as a job or place at a college, which has been signed. English = application. As a Verb or Adjective: 1. To write your name in your own characteristic way on some kind of document. English = sign. 2. To make or be bound by a written and signed legal agreement. English = contract, (be) contracted. 3. To make a formal written request for a position in an organisation. English = apply, make an application. 4. To add your name to a list, especially a list of people who are to do something. English = sign up. 5. To put your name on an official list, for example to enable you to receive a service from the government or a business. English = register.