Final answer:
A waiver is the voluntary relinquishment of the right to a mechanic's lien before a notice of lien is filed.
Step-by-step explanation:
A waiver is the voluntary relinquishment of the right to a mechanic's lien before a notice of lien is filed. It is essentially a contractual agreement where the party waiving the lien agrees to give up their right to file a lien in exchange for something of value, such as payment for work or services.