spoken as you breath out (releasing air) "phomph" is the sound made by a large mass moving through, and thus displacing a body of air.
by lars faber May 19, 2011
The sound of a large uncompressed body of air moving. Commonly heard near wind turbines as the blade passes in front of the tower. More extreme as seperation angle advances or as tip ratio increases.
by windlab April 26, 2011