Crossword Genius

Before midday the doc gets shot (4)

Ross

I believe the answer is:

ammo

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'shot' is the definition.
(ammunition)

'before midday the doc' is the wordplay.
'before midday' becomes 'am'.
'the doc' becomes 'mo' (I can't explain this - if you can you should believe this answer much more).
'am'+'mo'='AMMO'

'gets' is the link.

Can you help me to learn more?

(Other definitions for ammo that I've seen before include "Bullets (sl.)" , "that goes in magazine: ...?" , "Bullet" , "rounds briefly" , "Projectiles" .)

I've seen this clue in The Globe and Mail.
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