\Ap`pel*lor"\ ([a^]p`p[e^]l*l[^o]r"), n. [OF. apeleur, fr. L. appellator, fr. appellare.] (Law) (a) The person who institutes an appeal, or prosecutes another for a crime. --Blackstone. (b) One who confesses a felony committed and accuses his accomplices. --Blount. --Burrill. Note: This word is rarely or never used for the plaintiff in appeal from a lower court, who is called the {appellant}. Appellee is opposed both to {appellant} and appellor.