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Blech. These are the grossest words.
a visible trail left by an aircraft flying at high altitude or through supercold air, caused by the deposition of water vapour in the engine exhaust as minute ice crystals
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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