Wiktionary
alt. 1 (context chiefly US English) A raft, kayak, or similar watercraft used especially for traveling with the current of a river in a swift manner. 2 (context chiefly US English) A person who uses such a watercraft. 3 (context chiefly US English) A recreational or commercial boat used for regular operation on a riverway. 4 (context chiefly US English) A person who is an experienced worker or traveler on a riverway. n. 1 (context chiefly US English) A raft, kayak, or similar watercraft used especially for traveling with the current of a river in a swift manner. 2 (context chiefly US English) A person who uses such a watercraft. 3 (context chiefly US English) A recreational or commercial boat used for regular operation on a riverway. 4 (context chiefly US English) A person who is an experienced worker or traveler on a riverway.
Usage examples of "river runner".
Finally, the river runner's rubbery face took on its woebegone bassett hound expression again.
They boarded the river runner, taking their seats between the deep banks of oars.
The hydrofoil had been designed to function as a river runner but could handle open _ocean_ reasonably well as long as the waves didn't crest dangerously high.