Tease for being bony? (3)

I believe the answer is:

rib

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'tease' is the definition.
(thesaurus)

I don't understand the remainder of the clue.

(Other definitions for rib that I've seen before include "Bone; supporting member" , "Vein structure in a leaf" , "Part of vault" , "Tease; pectoral bone" , "Hinged rod in umbrella" .)

I've seen this clue in the Evening Standard.

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