noun 1.Law. a certificate on an affidavit, by the officer, showing by whom, when, and before whom it was sworn to.
2.a sworn officer; a magistrate; a member of a permanent jury.
Origin:
1400–50; late Middle English < Medieval Latin jūrātus sworn man, noun use of L past participle of jūrāre to swear, equivalent to jūrā- verb stem + -tus past participle suffix