(n) :
the act of waiving, or not insisting on, some right, claim, or privilege; a legal document releasing some requirement, such as
waiving a
right (giving it up) or a waiver of
liability (agreeing to hold someone
blameless). Also used for such a form even before it is filled out and signed
"I had to sign a waiver when I went skydiving, agreeing not to sue even if something went wrong."