A hollow or natural passage under or into the earth, especially one with an opening to the surface.
예문
1. the cave period (동굴 주거 시대) 2. He caved my hat in. (그는 나의 모자를 움푹 들어가게 했다) 3. After the long rain the road caved in. (장마 끝에 길이 함몰했다) 4. Germany caved in due to lack of goods. (독일은 물자 부족 때문에 굴복했다)
