Aircraft over housing never closer (5)
I believe the answer is:
drone
'aircraft' is the definition.
(drone is a kind of aircraft)
'over housing never closer' is the wordplay.
'over' becomes 'done' (both can mean finished).
'housing' is an insertion indicator.
'closer' indicates one should take the final letters (the letter which 'closes' the word).
The final letter of 'never' is 'r'.
'done' placed around 'r' is 'DRONE'.
(Other definitions for drone that I've seen before include "Talk boringly; male bee" , "Continuous low-pitched note" , "Non-worker" , "Aircraft operated by remote control" , "mollusc" .)