noun 다운로드 🔗공유 낙석 A quantity of rocks that has fallen from a cliff etc. Examples : "The road was closed due to a dangerous rockfall from the steep hillside. " 가파른 산비탈에서 위험한 낙석으로 인해 도로가 폐쇄되었습니다. geology disaster environment AI와 채팅어휘 게임독해 연습