Loafing or just ticking over (6)
I believe the answer is:
idling
'loafing or just ticking over' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for idling that I've seen before include "'Lazing, loafing (6)'" , "Not in gear; lazing around" , "Loafing or just ticking over" , "Doing little or nothing" , "Spending time doing nothing" .)