Home › Words › S › sleekstonesleekstone/ˈsliːkˌstəʊn/sleekstone means A smooth stone used for polishing.Among words judged in Lexicurio's Arena, sleekstone ranks #10,312 of 42,762 for Qualifying.sleekstone is pronounced /ˈsliːkˌstəʊn/.EtymologyFrom Middle English slykeston; equivalent to sleek + stone.nounA smooth stone used for polishing.Definitions & examples from Wiktionary (CC BY-SA 3.0).