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1.
abreviation of one more.
Dude, I really shouldn't, but give me one mo.
by ry3an7 August 15, 2007
4 1
 
2.
Short for "one moment". British and Australian slang. Normally used as an abbreviated form of "one moment" in online conversations.
Wait one mo, I'm gonna grab a sandwich.
by Fozzibab June 05, 2006
2 3