Crossword Genius

What dentist will have done – trained? (7)

Ross

I believe the answer is:

drilled

I believe this clue is a double definition.

'what dentist will have done' is the first definition.

'trained?' is the second definition.
(drilling is a kind of training)

(Other definitions for drilled that I've seen before include "Made a hole with a pointed tool" , "given military instruction" , "Bored a hole or trained by repetition" , "soldiers may be treated thus" .)

I've seen this clue in The Everyman puzzle in The Observer.
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