trailing edge

English Thesaurus

1. the rear edge of an airfoil (noun.artifact)

hypernym	:	edge,
definition	:	a sharp side formed by the intersection of two surfaces of an object (noun.artifact)

part meronym	:	aerofoil, airfoil, control surface, surface,
definition	:	a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight (noun.artifact)