noun
A distinguishing characteristic.
You know what a university is, and a university degree? It is the necessary hallmark of a man who wants to do anything in teaching.
The inference appears to be that there is some subtle connection between immorality and art, as if the handling of the lewd, or the depicting of it, were in some sort the hallmark of the true artist.
An official marking made by a trusted party, usually an assay office, on items made of precious metals.
It can highlight our embodiment, a qualitative step away from the hallmark machines that work so resolutely to disembody us.
verb
To provide or stamp with a hallmark.
The cane was undoubtedly of foreign make, for it had a solid silver ferrule at one end, which was not English hall–marked.
[…]everything on my plate those forks and fishslicers were hallmarked silver too I wish I had some I could easily have slipped a couple into my muff when I was playing with them[…]
name
A surname.
Ellipsis of Hallmark Cards.