pax /pæks/noun 8exclamation 1forms 1 noun8 •Any of several notable periods of peace in human history, particularly owing to unquestionable hegemony on the model of the Pax Romana. •[usually plural] (informal) A passenger; passengers.Had a pax think they were having an asthma attack so I called MedLink but once they answered the pax said they were doing better IDK man I just wanna fly airplanes — 2026 •[usually plural] (informal) A guest (at an event or function). •[usually plural] (informal) Person (a restaurant guest, when counting). •(UK, old-fashioned) Friendship; truce.to be good pax (i.e., good friends) •A painted, stamped or carved tablet with a representation of Christ or the Virgin Mary, which was kissed by the priest during the Mass ("kiss of peace") and then passed to other officiating clergy and the congregation to be kissed. See also osculatory.Fortune is Bardolphs foe, and frownes on him: for he hath stolne a Pax, and hanged must a be: […] Exeter hath giuen the doome of death, for Pax of little price. — 1599 •A crucifix, a tablet with the image of Christ on the cross upon it, or a reliquary. •The kiss of peace. exclamation1 •(UK, old-fashioned) A cry for peace or truce in children's games. formspaxes