an invitation to engage in a contest or controversy of any kind; a defiance; specifically, a summons to fight a duel; also, the letter or message conveying the summons.-the act of a sentry in halting any one who appears at his post, and demanding the countersign.-a claim or demand.-the opening and crying of hounds at first finding the scent of their game.-an exception to a juror or to a member of a court martial, coupled with a demand that he should be held incompetent to act; the claim of a party that a certain person or persons shall not sit in trial upon him or his cause.-an exception to a person as not legally qualified to vote. the challenge must be made when the ballot is offered.-to call to a contest of any kind; to call to answer; to defy.-to call, invite, or summon to answer for an offense by personal combat.-to claim as due; to demand as a right.-to censure; to blame.-to question or demand the countersign from (one who attempts to pass the lines); as, the sentinel challenged us, with  "who comes there?"-to take exception to; question; as, to challenge the accuracy of a statement or of a quotation.-to object to or take exception to, as to a juror, or member of a court.-to object to the reception of the vote of, as on the ground that the person in not qualified as a voter.-to assert a right; to claim a place.