Making a dent or depression in something; the act or process of creating an indentation or hollow mark.
From 'dent' (from Old English 'dynt,' a blow) with the present participle suffix '-ing.' Despite the similar spelling, this is unrelated to dental terms; it refers to physical impressions rather than teeth.
It's a great example of homophone confusion—'denting' sounds like it relates to teeth, but it actually comes from an Old English word for 'blow' and refers to physical damage, showing how English has multiple unrelated words with dental-sounding names.
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