Home › Words › S › sterncastlesterncastlesterncastle · noun — an aftcastle.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, sterncastle ranks #1,115 of 43,022 for Qualifying.EtymologyFrom stern + castle.nounAn aftcastle.Definitions & examples from Wiktionary (CC BY-SA 3.0).