amended pleading

Definition from Nolo’s Plain-English Law Dictionary

A written pleading in a lawsuit that is changed and refiled as an amended pleading by the party who initially filed it. Pleadings are amended for various reasons, including correcting facts, adding claims, adding affirmative defenses, or responding to a court's finding that a pleading is inadequate as a matter of law.

Definition provided by Nolo’s Plain-English Law Dictionary.