Weirdly labelled contraption (6)

I believe the answer is:

gadget

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'contraption' is the definition.
(I know that contraption can be written as gadget)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for gadget that I've seen before include "Useful small device" , "Nifty device" , "Tagged (anag.)" , "Ingenious little device" , "Gismo" .)

I've seen this clue in The Irish Times.

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