To remove something (especially dirt or graffiti) by spraying it with high-pressure water(verb)
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Use "jetwash" in a sentence
"Sally will be able to lend her screaming voice to the jetwash at Shea Stadium after all."
"I can imagine a miffed Osprey being buffeted by jetwash and bombing the intruder in it's airspace."
"The pilot came on the PA and said that air traffic had given another plane a route to altitude in our path and that we had gone through it's jetwash."