Eye-catching gadget (4)

I believe the answer is:

hook

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'eye-catching gadget' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?

This is the entire clue.

Can you help me to learn more?

(Other definitions for hook that I've seen before include "Bag" , "Bad golf shot" , "Short swung boxing blow" , "Sharply bent line" , "Peter Pan 1ac" .)

I've seen this clue in The Globe and Mail.

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