early 14c., passager
"passer-by," from O.Fr. passageor
"traveler," noun use of passagier
(adj.) "passing, fleeting, traveling," from passage
). The -n-
was added early 15c. (cf. messenger, harbinger, scavenger
). Meaning "one traveling in a vehicle or vessel" first attested 1510s. Passenger-pigeon
of N.Amer. so called from 1802; extinct since 1914.