Voir dire

(vwär deer). [O. Fr., to say the truth, L. Lat. verum dicere, from O. Fr. voir, voire, true, truth, fr. Lat. verus, true, and Fr. dire, Lat. dicere, to say.] (Law.) An oath administered to a witness, either before or after being sworn in chief, requiring him to speak the truth, or make true answers in reference to matters inquired of, to ascertain his interest in the cause as affecting his competency. Greenleaf. Ld. Abinger.