river runner noun4 •A raft, kayak, or similar watercraft used especially for traveling with the current of a river in a swift manner.There are many ways to go down a whitewater river. . . . If you paddle a play boat, you will play. If you paddle a more stable river runner, you may play a little less or a little differently. — 2008 •(US) A person who uses such a watercraft."It's fabulous, spectacular, a little scary and sometimes a lot scary," John Williams, a Moab river runner for 30 years, said of the Cataract spring flood. — 1998 •(US) A person who is an experienced worker or traveler on a riverway.[I]t was Captain Tod Halsey who had the responsibility of the whole thing. If the great marble shaft couldn't be dragged up the face of the bluff, the squint-eyed old river runner would be the loser. — 1940 •(US) A recreational or commercial boat used for regular operation on a riverway.In 1919, C.P. built a true work of art, a 26-foot mahogany river runner, with a stepped hull and an aft cockpit — 1997 formsriver runners · river-runners