noun🔗Share낙석A quantity of rocks that has fallen from a cliff etc."The hiking trail was closed due to recent rockfalls, making it too dangerous to pass. "최근 낙석으로 인해 하이킹 코스가 폐쇄되어 통과하기에는 너무 위험했습니다.geologydisasterenvironmentChat with AIVocabulary GamePractice Reading