True meaning of courage (6)

I believe the answer is:

spirit

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

This might be a double definition.

'true meaning' is the first definition.
'spirit' can be an answer for 'meaning' (thesaurus). I am not sure about the 'true' bit.

'courage' is the second definition.
(I've seen this before)

'of' acts as a link.

Can you help me to learn more?

(Other definitions for spirit that I've seen before include "25 28 [MARS LANDER]" , "Scotch, maybe" , "Animating force within living things" , "character like Ariel" , "Drink for a supernatural being" .)

I've seen this clue in The Guardian.

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