Crossword Genius

A joint where members meet (5)

Ross

I believe the answer is:

ankle

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

This clue could be a double definition.

'a joint' is the first definition.
(joint of the body)

'members meet' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'where' is the link.

Can you help me to learn more?

(Other definitions for ankle that I've seen before include "Leg-joint" , "Bone over foot" , "Major joint in lower limb" , "Major foot joint" , "Low joint" .)

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