concave
🇺🇸
/kɑːnˈkeɪv/
🇬🇧
/kɒnˈkeɪv/
Shaped like the inside of a bowl or a cave, curving inward
The cave had a concave wall that echoed our voices.
동굴에는 우리 목소리를 울리게 하는 konkave벽이 있었습니다.