society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > means of propulsion > [verb (transitive)] > open throttle (of engine), accelerate (2)
Physical senses. transitive and intransitive. To increase the speed of (an engine or vehicle) by widening the throttle.
transitive and intransitive = to open up at phrasal verbs, to open up 1f at phrasal verbs.