I agree with the Wikipedia definition, I think the issue we’ve got here is how it is being misused not what it actually means.
I then looked at see also which includes “mint” condition……..think we’ll need another thread for that.
https://en.m.wikipedia.org/wiki/New_old_stock
So what @MattiThundrrr posted earlier is: NOS BNIB MIP NRFB ..... but it's still OOT (Old Obsolete Tat).