What an incredible and eclectic array of bluffs this time!...it may be the best board ever! First, I think the gorilla def (if it proves a bluff) deserves a point just for effort! I like C because it sounds like a Latin coinage and could well be a throwback to the early days of bookmaking, but in a way that's too easy.
And since the cheese definition seems too precise to be concocted (and my rebellious streak always loves to buck a trend) I'll choose L...and take a little fasgrolia with my Swiss, Muenster, and Jarlsberg.