flap·er·on 
(flăpə-rŏn′)
(flăpə-rŏn′)n.
A control surface on an aircraft wing functioning both as a flap and as an aileron.
[FLAP + (AIL)ERON.]
- irradiation
- irradiative
- irradiator
- irradicable
- irradicably
- irrational
- irrationalism
- irrationality
- irrationally
- irrationalness
- irrational number
- Irrawaddy
- irreal
- irreality
- irreclaimability
- irreclaimable
- irreclaimableness
- irreclaimably
- irreconcilability
- irreconcilable
- irreconcilably
- irrecoverable
- irrecoverably
- irrecusable
- irrecusably