Black paint brush (5)

I believe the answer is:

sable

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This might be a double definition.

'black paint' is the first definition.
'sable' can be an answer for 'black' (heraldic term for black). I am not sure about the 'paint' bit.

'brush' is the second definition.
(sable is a kind of brush)

Can you help me to learn more?

(Other definitions for sable that I've seen before include "Adventurous courage" , "Bales of valuable Russian fur" , "Literary black" , "Bales of precious fur" , "Dark brown fur of the marten" .)

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

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