drink/driNGk/ Verb:
Take (a liquid) into the mouth and swallow.
I know you’re having a bit of a laugh, however force feeding is not drinking.
As the wiki you link quite clearly shows, force feeding is having the tube passed through the nose or mouth into the stomach. Whilst drinking, in context of a horse, doesn’t include a tube, and does include the liquid going into the mouth and being swallowed.
Welcome to lesswrong, I’m quite new here too. I read your intro and think you would probably thoroughly devour Edward De Bono’s “I am right, you are wrong”. I agree with you regarding debating (and criticism) and so does De Bono, he writes about it quite elegantly.
Cheers, peacewise.