くぼみ· also へこみ
hollow; cavity; dent; depression
Common word Also written 窪み
Noun
後うしろのドアにへこみができた。
They had a dent in the rear door.
表面ひょうめんに細こまかい傷きずやへこみがたくさんあるから磨みがいてもむだだよ。
There are so many fine scratches and dents on its surface that it's no use polishing it.