Part of speech: noun1 [U] the act of writing your name at the end of an official document to show that you accept it:
the signing of the Treaty of Rome
2 [C] (BrE) a person who has just signed a contract to join a particular sports team or record or film company:
Tomorrow's match will be the first for the team's latest signings.
3 [U] the act of making an official contract that arranges for sb to join a sports team or a record or film company:
the 」5 million signing of the star player from Liverpool
4 [U] the act of using sign language:
the use of signing in classrooms