Iu English law. A court instituted for the trial, during the recess of parliament , of peers indicted for treason or felony, or for misprision of either. This court is not a permanent body, but is created in modern times, when oceasiou requires, and for the time being, only; and the lord high steward, so constituted, with such of the temporal lords as may take the proper oath, and act, constitute the court.