01 n. Audible expression of sorrow; lamentation; complaint; hence, a mournful song; a lament.
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1.
Audible expression of sorrow; lamentation; complaint; hence, a mournful song; a lament.
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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.
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3.
A private memorial tendered to a court, in which a person sets forth his cause of action; the exhibiting of an action in writing.(Law)