Definition of passports:
(n) :
An official document normally used for international journeys, which proves the identity and nationality of the person for whom it was issued.
(n) :
(by extension, informal) Any document that allows entry or passage.
(n) :
(figuratively) Something which enables someone to do or achieve something.
(n) :
An identification document used by firefighters, collected when they enter a dangerous area and returned when they leave, to keep track of who is still in the area.
(v) :
To regulate how money given to a local authority must be spent.
(v) :
Providing the legal requirements to enable or legitimize cross-border economic activity.