Top Definition
1/ The sound girls make when they say "awesome"
2/ The Czech word for "EIGHT"
Girl : "Oh, Alec! That V8 Skoda of yours, its just OSUM!"
by Velvet Revolution November 22, 2013
The true spelling (internet spelling) for the word awesome. If you spell it like "osum" screw what everyone else says, you are awesome.
Tim: Yo Bill, that is quite osum.

Bill: osum?

Tim: Yeah, it's the hip new spelling for awesome.

Bill: Aw, gay.

Tim: No it's not, it's totally osum.
by thetruth. May 25, 2008
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