A document entitling the bearer to free transportation.
An exemption from normal processes.
An intentional walk.
A legal document removing some requirement, such as waiving a right (giving it up) or a waiver of liability (agreeing to hold someone blameless).
The act of waiving, or not insisting on, some right, claim, or privilege.
Something that releases a person from a requirement.
To waive (to relinquish, to forego).