Home › Words › R › riverboarderriverboarderriverboarder · noun — one who takes part in the sport of riverboarding.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, riverboarder ranks #16,852 of 42,858 for Qualifying.EtymologyFrom river + boarder.nounOne who takes part in the sport of riverboarding.Definitions & examples from Wiktionary (CC BY-SA 3.0).