A creature so ferocious it destroys its own home and wrecks havok on its environment in fits of insanity. At 3" in height this devilish animal often tries to wage psychological warfare on its owners.
A word used to describe the weather. Presumably when it is could and chinchillas are falling from the sky. This, however is not the case, and it is just a gay way to say that it is slightly cold out.
Guy 1: "Man, it was so Chinchilly today."
Guy 2: "You mean it was cold, right?"
Guy 1: "Yeah."
Guy 2: "Fag."