1. That travels
2. Carried, used by, or accompanying a traveler

Traveling.

ETYM Latin rapidus, from rapere to seize and carry off, to snatch or hurry away; perhaps akin to Greek arpazein: cf. French rapide. Related to Harpy, Ravish.
1. Characterized by speed; moving with or capable of moving with high speed; SYN. speedy.
2. Done or occurring in a brief period of time.

Chiefly British; excellent, delightful