It conveys a sense of courage (5)

I believe the answer is:

nerve

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'courage' is the definition.
(I know that nerve is a type of courage)

I don't understand the remainder of the clue.

(Other definitions for nerve that I've seen before include "Cheek; self-possession" , "Cool courage" , "Strand of body fibre" , "Steadiness, courage" , "Bundles of fibres in the body that transmit instructions" .)

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

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