Top Definition
oss
1. Posterior, buttocks, ass

(An intentional or unintentional mispronunciation of "ass." Derived from a slackish or lazy way of saying "ass," in which the "a" sound is more difficult than the easier-to-articulate long "o" sound.
Often misunderstood as a German pronunciation of "ass," due to the long "o" rather than "a" sound.
Often confused with the acronym OSS, Official of Strategic Services.
Believed to have been orginated in northeastern Nebraska by a number of smalltown youths indulgin in alcohol.)
You best watch you'self or I'm gonna kick your oss.
by P'tainz June 28, 2011

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OSS
The GIMP is a fine example of OSS.
by KFM November 26, 2004

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OSS
Or some shit
So then he was telling me that I'M a slut oss!
by effyoubiatchesssss December 05, 2010

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oss
Out of School Suspension
shit..i got 4 days oss
by dopey20_3 March 15, 2006

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oss
on some shit
"oss, I think his mom died last year."

"I don't think she's into you, oss."
by hannah_is_the_shit March 13, 2015

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oss
(Abbrev.) the Office of Strategic Services (OSS)was a United States intelligence agency formed during World War II but it was chanced by CIA
i'll be in a misson the next monday it is secret 'cause im fron oss and nobody most know !!! oh shit i forgot it doesn't exist anymore damm i gotta stop smoking
by sniper-j April 26, 2007

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oss
awesome (Abbrev.) Excellent, or at least satisfactory.
A: "I just moved into my new apartment, and I get the first month's rent free."
B: "Oss."
by Addison September 11, 2004

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