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1.
A guy or girl who moves in and then is your wingman when wooing a roomate.
Hey would you become my wingmate?
by Zeks September 22, 2012
 
2.
a) your australian wingman
b) what you bring when you have guy friends and girl friends and youre not sure who's going to act as the wingman/girl
man, i really need a good wingmate tonight. who's up for it?
by friendlyfriends March 31, 2011