Certain plane (6)

I believe the answer is:

glider

(Other definitions for glider that I've seen before include "Motorless plane" , "Unpowered plane" , "Aircraft supported solely by air" , "Sailplane" , "Engineless aircraft" .)

I've seen this clue in the Penny Press.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.