Top Definition
the last name of a very powerful person. ongmus are usually self-motivated and hard-working.
me: god! I hate doing school work!

someone: well, you should work-hard and enjoy the fruit of your labor.. it feels good if you ask me..

me: Damn! you're such an Ongmu..

someone: yea, I know.
by pemmjayyy April 05, 2009
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