Member's movement perhaps supporting country (9)

I believe the answer is:

pronation

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'member's movement' is the definition.
'pronation' can be an answer for 'movement' (pronation is a kind of movement). I'm not certain of the 'member's' bit.

'supporting country' is the wordplay.
'supporting' becomes 'pro' (I've seen this in other clues).
'country' becomes 'nation' (synonyms).
'pro'+'nation'='PRONATION'

'perhaps' acts as a link.

Can you help me to learn more?

(Another definition for pronation that I've seen is " Putting foot down".)

I've seen this clue in The Times.

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