Home › Words › G › groutergroutergrouter · noun — one who grouts.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, grouter ranks #34,291 of 43,221 for Qualifying.EtymologyFrom grout + -er.nounOne who grouts.Definitions & examples from Wiktionary (CC BY-SA 3.0).