A person who pleads in a court of law, especially a lawyer. The pleader presented a compelling argument in defense of his client.
Someone who makes a plea or appeal. As a passionate pleader for animal rights, she often spoke at rallies and events.
In historical English law, a professional who drew up written pleadings for submission to a court. Before the introduction of standardized forms, a pleader would draft the necessary documents for the King's Bench.