Trouble resulting from ash-trays yet to be emptied out (6)
I believe the answer is:
harass
'trouble' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for harass that I've seen before include "Repeatedly torment" , "Disturb < badger" , "Pester, annoy continually (6)" , "Annoy persistently, persecute" , "hound" .)