Ghostly light device in the lab? (6,4)
I believe the answer is:
'device in the lab?' is the definition.
'spirit lamp' can be an answer for 'device' (spirit lamp is a kind of device). I am unsure of the 'in the lab?' bit.
'ghostly light' is the wordplay.
'ghostly' becomes 'spirit' (I can't explain this - if you can you should give a lot more credence to this answer).
'light' becomes 'lamp' (lamp is a kind of light).
Can you help me to learn more?
(Other definitions for spirit lamp that I've seen before include "Meths-burning light" , "this'll lighten things up" .)