Sie nannten ihren Hund Lucky.

This is another one of these “name” sentences. Does the word “Lucky” have any use in German? I didn’t see it listed in Is it perhaps a colloquial word?

I ask because I know that when English words or expressions are borrowed into German, they can sometimes end up with very different meanings, like “Handy” or “Public Viewing”.

It is one of those “Name sentences”, Yes.

Yeah, but what I’m asking is, does the word “lucky” have any uses other than as a name, in German?

It’s just a Name, nothing else.