(slang) set at a high speed, amplification, etc.
1. armed with or wearing a
gun or guns. This is formed from gunned, meaning equipped with a
gun or
having guns, and up, which in this
case has almost no meaning at all except to emphasize the
action or to show that the
action is done fully. 2. figuratively, to be rapidly increased in speed,
power, activity, etc. To
gun means to
cause a vehicle, aircraft, etc., to accelerate quickly by significantly increasing the
supply of fuel to the engine. For
example, one could
gun a car by heavily depressing the
gas pedal.