1. (noun)plaint (United Kingdom) a written statement of the grounds of complaint made to court of law asking for the grievance to be redressed Synonyms: lamentation, lament, wail
2. (noun)lament, lamentation, plaint, wail a cry of sorrow and grief Synonyms: coronach, lament, dirge, lamentation, wail, threnody, mourning, plaint, requiem, elegy