Part of a hip Paris destination (5)

I believe the answer is:

ilium

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'part of a hip' is the definition.
('ilium' is part of 'hip')

I don't understand how the remainder of the clue works.

(Other definitions for ilium that I've seen before include "hip (at least in part)" , "Large pelvic bone" , "Large bone of the pelvis" , "Bone; ancient Troy" , "Part of skeleton" .)

I've seen this clue in The Sunday Times and The Times.

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