Top Definition
A slang word for "Green Lantern", a D.C. comics character who's responsibilities include being a part of a peace keeping force based on the planet Oa.
There are no official examples of Oan SWAT being used in cannon.
#oa #oan #swat #green lantern #hal jordan #gl #gaurdians of the universe #ring slinger #light warrior
by Oan SWAT July 09, 2009
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