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1.
aspects of a dangerous thing or situation which could lead to serious injury or death.

(from "trike", or the 3-wheeled motorized ATV, which have since become illegal to manufacture, and in some places, even use due to the high number of fatalities caused by their flipping backwards and killing their riders).
"i hear the trike factor on this new audi is pretty scary."
by eman November 14, 2003