Courageous quality (4)

I think it could be either:

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grit

(Other definitions for grit that I've seen before include "Determination - which is found on winter roads" , "Courage - clench - small particle of stone" , "Pluck; sand particles" , "Particles of stone/sand" , "Small loose particles of stone" .)

I've seen this clue in the Newsday.

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