転てん石せきてんせきMeanings1nounrolling stone; boulderRefers to a stone that rolls or has rolled, or a large rounded rock. Often used in proverbs or geological contexts.転てん石せき苔こけむさず。A rolling stone gathers no moss.Expressions転てん石せき苔こけ生むさずa rolling stone gathers no moss転てん石せき苔こけを生しょうぜずa rolling stone gathers no moss