To call to mind (something) for some purpose.
To appeal for validation to a (notably cited) authority.
To cause (a program or subroutine) to execute.
To solicit, petition for, appeal to a favorable attitude.
To conjure up with incantations.
To bring about as an inevitable consequence.
To call upon (a person, a god) for help, assistance or guidance.
To start something with somebody else, such as a conversation or relationship.
To start something, usually playing live music.
To raise (as sheet metal), in making dishes, pans, etc., by blows or pressure in a die.