Plaint
Plaint , noun
[Old English plainte, pleynte, French plainte, from Latin plangere, planctum (plancta, fem. p. p.), to beat, beat the breast, lament. Compare Complain, Plague, Plangent.]
1.
Audible expression of sorrow; lamentation; complaint; hence, a mournful song; a lament. — Wordsworth
The Psalmist's mournful plaint.
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.
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