Definitions

1. noun

a formal complaint or expression of grievance, especially one made in writing, especially by a group of people

“The labor union filed a plaint with the government regarding unfair labor practices.”

2. noun

a musical composition characterized by a slow and mournful melody, often used to express sadness or grief

“The plaint was a beautiful and sorrowful piece that moved the audience to tears.”

3. verb

to express a complaint or grievance

“The workers planned to plaint to their employer about the poor working conditions.”