Answer: SKYWRITE

AnswerCrossword Clue
SKYWRITEUse lofty words?
SKYWRITECreate high-level advertising?
SKYWRITEMake a plane message
SKYWRITEAir one's ad, in a way
SKYWRITEPitch at a high level?
SKYWRITEAdvertise, in a way.
SKYWRITEUse a plane for a pencil
SKYWRITEDesign meaningful contrails
skywriteto write in the sky with vapour from a plane