Vocabulary What does 凹み (くぼみ, kubomi) mean? 凹み (くぼみ, kubomi) means hollow; cavity; dent. Quick factsReadingくぼみRomajikubomiPart of speechnoun 凹みくぼみkubomihollow; cavity; dent1noun hollow; cavity; dentAlso written: 窪みKanji in this word凹concave, sunken