Crossword Genius

Ghostly light device in the lab? (6,4)

Ross

I believe the answer is:

spirit lamp

I'm a little stuck... Click here to teach me more about this clue!

'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).
'spirit'+'lamp'='SPIRIT-LAMP'

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" .)

I've seen this clue in The Hindu.
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