the rear edge of a propeller blade or airfoil.
Origin of trailing edge
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for trailing edge
the rear edge of a propeller blade or aerofoilCompare leading edge
physics the edge of a pulse signal as its amplitude falls
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