Crossword Genius

Conservative member to go to summit? (5)

Ross

I believe the answer is:

climb

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'summit?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

'conservative member to go to' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'member' becomes 'limb' (member can mean a limb).
'to go to' is a charade indicator (letters next to each other).
'c'+'limb'='CLIMB'

Can you help me to learn more?

(Other definitions for climb that I've seen before include "Go higher up" , "Rise, mount" , "improve one's social status" , "Use hands and feet to rise" , "Mount, ascend" .)

I've seen this clue in The Times.
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