Answer: winglets

AnswerCrossword Clue
WINGLETSNestlings' appendages
wingletsalula
wingletslittle wing
wingletsWINGLET, a small wing
wingletsa. small wing used mainly to carry external loads or to connect struts or gears to the fuselage b. short, near-vertical projection on a wing tip that reduces drag and improves fuel efficiency