(United Kingdom) a written statement of the grounds of complaint made to court of law asking for the grievance to be redressed
<noun.communication>
a cry of sorrow and grief
<noun.communication> their pitiful laments could be heard throughout the ward
Plaint \Plaint\, n. [OE. plainte, pleynte, F. plainte, fr. L. plangere, planctum (plancta, fem. p. p.), to beat, beat the breast, lament. Cf. {Complain}, {Plague}, {Plangent}.] 1. Audible expression of sorrow; lamentation; complaint; hence, a mournful song; a lament. --Chaucer.``The Psalmist's mournful plaint.'' --Wordsworth.
2. An accusation or protest on account of an injury.
There are three just grounds of war with Spain: one of plaint, two upon defense. --Bacon.
3. (Law) A private memorial tendered to a court, in which a person sets forth his cause of action; the exhibiting of an action in writing. --Blackstone.