[quote="rose-colored-coolaid]
From
http://dictionary.reference.com/browse/unicorn1. a mythical creature resembling a horse, with a single horn in the center of its forehead: often symbolic of chastity or purity.
2. a heraldic representation of this animal, in the form of a horse with a lion's tail and with a long, straight, and spirally twisted horn.
Wow, it's in the dictionary. I gave you authoritative proof that unicorns exist. Maybe that's why proof from authority is a logical fallacy...?
Or perhaps we should concede that finding a word in the dictionary means it is commonly used, not that it is fictional.[/quote]
The word is not fictional. What it describes is fictional, and the dictionary definition includes that critical information in the definition.
I really appreciate most of your posts here, RCC, even when we disagree, but I think you are barking up the wrong tree on this one. It really is an established definition and, actually, enhances discourse. It is good.