Need a name for BIG monsters

[Zhure]

"... and the natives called it 'Heurg!' for the sound its victims made."

 

[Matthias]

Call it a "Beast of X", where X is the name the monster's first known victims -- person, town, nation, whatever. The name doesn't have to be impressive. Let the monster itself impress upon your vic^h^h^hplayers exactly how dangerous it is.