1. Lamentation; complaint; audible expression of sorrow.

From inward grief

His bursting passion into plaints thus pour'd.

2. Complaint; representation made of injury or wrong done.

There are three just grounds of war with Spain; one of plaints; two upon defense.

3. In law, a private memorial tendered to a court, in which the person sets forth his cause of action.

4. In law, a complaint; a formal accusation exhibited by a private person against an offender for a breach of law or a public offense.