Oddly thin Irish food made using bone? (5)

I believe the answer is:

tibia

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'bone?' is the definition.
(I know that tibia is a type of long bone)

I don't understand the remainder of the clue.

(Other definitions for tibia that I've seen before include "Shin bone" , "The large shinbone" , "part of skeleton" , "Bone of the lower leg" , "The formal shinbone" .)

I've seen this clue in The Irish Times.

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