Lazing (6)
I believe the answer is:
idling
'lazing' is the definition.
('idle' can be a synonym of 'laze')
This is the entire clue.
(Other definitions for idling that I've seen before include "(Engine) ticking over" , "Being indolent" , "'Lazing, loafing (6)'" , "Loafing or just ticking over" , "Not at work" .)