Nick dropping guts in beer joint (5)

I believe the answer is:

ankle

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'joint' is the definition.
(I know that ankle is a type of gliding joint)

I can't explain the remainder of the clue.

(Other definitions for ankle that I've seen before include "Leg-joint" , "Human joint" , "Major foot joint" , "Narrow part of leg" , "Major joint in lower limb" .)

I've seen this clue in The Sun.

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