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3.
A person or thing that looks completely crazy or ridiculous.
Wow, look at that homeless guy! Man, he's an osso
by streetballer June 29, 2011
 
1.
Slang used by Dutch foreigners to refer to home, the place they live in.
Sergio: Ik ga nie smokuh. Ik kan nie skaffa naar osso gaan man!

Achmed: Fuck it ouwe, laten we gewoon sucken!

Translated:

Sergio: I can't fucking go home being high!

Achmed: Fuck it dude, lets smoke anyways!
by u39282983 April 01, 2009
 
2.
Osso pronounced: o-so

Adjective- awesome, the most top, pro-ness, exceptional, impressive or daunting, high quality, excellent.

see also

adverb- ossoly

noun- ossoness
Christian: "that girl with the koozie looks pretty cool"

Andrew: "no dude, she looks way osso"
by Drew drewstien June 22, 2010
 
4.
a weiner, a weiner, a weiner, a weiner, also known as penis, sometimes, dick. weiner, a weiner, a kristin, a weiner and a weiner.!
my osso got stuck in the tractor wheels.
by Cassidie and Kristin August 04, 2004