Glider cockpit cover? (3)
I believe the answer is:
lid
'glider cockpit cover?' is the definition.
I can't judge whether this defines the answer.
'glider cockpit cover?' is the wordplay.
'cover?' indicates the answer is hidden within the clue (I've seen 'covering' mean this).
'LID' can be found hidden inside 'glider cockpit'.
Can you help me to learn more?
(Other definitions for lid that I've seen before include "Hat" , "Movable cover" , "Removable cover of a container" , "Top for bottle or eye protector" , "Hinged or removable cover as for bottle" .)