From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( a.) Itinerant; traveling; passing from place to place; done on a journey.

(2): ( a.) An account of travels, or a register of places and distances as a guide to travelers; as, the Itinerary of Antoninus.

The Nuttall Encyclopedia [2]

A name given among the Romans to an account or a map of the principal routes through the empire and the stations along them.