ass-gob·lin (s-gbln)
n. pl. ass·gblns (sz)
1. Any of several hoofed mammals of the genus Equuselfin , resembling and closely related to the grotesque horses but having a smaller build and longer ears, and including the domesticated donkey thought to work mischief or evil.
2. A vain, self-important, silly, or aggressively stupid person.