Adopt or use pose properly (7)

I believe the answer is:

espouse

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

'adopt' is the definition.
(I know that adopt can be written as espouse)

'use pose properly' is the wordplay.
'use pose' anagrams to 'ESPOUSE'.
But, I'm not sure how this is indicated.

'or' acts as a link.

Can you help me to learn more?

(Other definitions for espouse that I've seen before include "Take in marriage" , "Give support to - see soup (anag)" , "Embrace" , "Adopt or support, say a cause" , "Marry -- take on as a cause" .)

I've seen this clue in the Sydney Morning Herald.

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