n. Theact of alleging; affirmation; declaration: as, “erroneous allegations of fact,” Hallam.n. That which is alleged or asserted; that which is offered as a plea, an excuse, or a justification; an assertion.n. In law: The assertion or statement of a party to a suit or other proceeding, civil or criminal, which he undertakes to prove.n. The plaintiff's first pleading in a testamentary cause.n. In eccles. suits, any pleading subsequent to the first.