Latininization of Middle English corrant, curraunt, borrowed from Anglo-French curant, corant, present participle of coure, courir "to run, flow," going back to Latin currere "to run, roll, move swiftly, flow," going back to Indo-European *kr̥s-e- "run," whence also Greek epíkouros "helping, helper" (from *epíkorsos "running toward," with o-grade ablaut), Old Irish carr "cart, wagon," Welsh car "vehicle" (from Celtic *kr̥s-o-), and perhaps Germanic *hursa- HORSE entry 1
NOTE: The Indo-European base has generally been taken as a primary verb, though Latin is the only language in which it is so attested.
