early 14c., "a strike or blow," dialectal variant of Middle English dint (q.v.); sense of "indentation" first recorded 1560s, apparently influenced by indent.
dent (v.)
late 14c., from dent (n.). Related: Dented; denting.
例文
1. The commission had barely begun to make a dent in the problem.
委員会は、この問題についてほとんど進展していない。
2.There was a dent in the car which hadn 't been there before.
車に以前はなかったくぼみが1か所現れた。
3.I don 't know how it came about but I 've got a dent in the rear of my car.