elevon elevon /ˈɛlɪvɒn/

noun

1. Aircraft control surfaces that combine the functions of the elevator (used for pitch control) and the aileron (to control roll), located at the trailing edges of the wings  ( elevon , taileron )
   aircraft control surfaces that combine the functions of the elevator (used for pitch control) and the aileron (to control roll), located at the trailing edges of the wings