What is the meaning of Invoke?

To call upon (a person, a god) for help, assistance or guidance.

To solicit, petition for, appeal to a favorable attitude.

To call another ship.

To call to mind (something) for some purpose.

To appeal for validation to a (notably cited) authority.

To conjure up with incantations.

To bring about as an inevitable consequence.

To cause (a program or subroutine) to execute.

Source: wiktionary.org