Home › Words › U › upstrokeupstroke/ˈʌpˌstɹoʊk/upstroke means the upward stroke of a pen, brush, piston, etc.Among words judged in Lexicurio's Arena, upstroke ranks #3,412 of 42,747 for Qualifying.upstroke is pronounced /ˈʌpˌstɹoʊk/.EtymologyFrom up + stroke.nounThe upward stroke of a pen, brush, piston, etc.Definitions & examples from Wiktionary (CC BY-SA 3.0).