Unfortunately, except in our minds, there is no definition, and what is in our minds is pretty time dependant.
The word "Hunter" doesn't always bring up the best of personages, historically, and bowhunters had their day. A bunch of us take it seriously but equally as many just see it as a thing to do. A cool thing, for some.
At one tme, long shots , shots at running game, and inadequate equipment was almost the norm, not
the exception. I hope those days have gone by.
We have gotten better, we have developed a sort of code amongst a large group of the more hardcore bowhunters, and I dare say the Trad group leads in this respect. We try really hard to be both a killer of game and an ethical human being.
Right now, being a bowhunter is a lot of things, some of which, I hope I fit into.
ChuckC