Practising dental work? (8)
I believe the answer is:
drilling
This could be a double definition.
'practising' is the first definition.
('drill' can be a synonym of 'practise')
'dental work?' is the second definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe you can see a link between them that I don't see?
Can you help me to learn more?
(Other definitions for drilling that I've seen before include "Boring; training" , "Boring; sowing seeds" .)