>>1528870
Both iMacs, iPhones and iPads come with built-in (or downloadable, for free) licensed dictionaries... I'm looking for one of those.
By my estimates this particular dictionary has been bundled with MacOS (or OSX, whatever) for over a decade, but for some reason no one's uploaded a copy of it yet.

Here's an example of where the dictionary *may* be stored on disk:
http://apple.stackexchange.com/questions/404461/ddg#449571
It differs a bit between MacOS versions.

So like, it's a dictionary that's licensed by Apple to be bundled with MacOS in its proprietary dictionary database format.