Crossword Genius

Openings in armoury? (6)

Ross

I believe the answer is:

chinks

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

'openings' is the definition.
(I know this)

'in armoury?' is the wordplay.
I cannot quite understand how this works, but
'in' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for chinks that I've seen before include "Small holes, may be in armour" , "Narrow holes or slits, perhaps in armour" , "Small holes, perhaps in armour" , "Narrow openings or slits, as in armour" , "Weak points (in armour)" .)

I've seen this clue in the Evening Standard.
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