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1.
To partner with in a competitive event. Also can be teamin'.
The tennis tournament was coming up and Alex and I were teaming.
by Dan Moses June 13, 2007
 
2.
Raining heavily, used in Northern Ireland
Take your brolly, its teaming out there
by AidanG August 28, 2005
 
3.
When a person who is hating on you but might be admiring you at the same time..
You say you dont like me but you Teaming me bitch by trying to be me.
by Nizza55112 January 30, 2010