Crossword Genius

Bra thinly disguised as a mind-boggling trap (9)

Ross

I believe the answer is:

labyrinth

I'm a little stuck... Click here to teach me more about this clue!

'a mind-boggling trap' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'bra thinly disguised' is the wordplay.
'disguised' is an anagram indicator.
'bra'+'thinly'='brathinly'
'brathinly' with letters rearranged gives 'LABYRINTH'.

'as' is the link.

Can you help me to learn more?

(Other definitions for labyrinth that I've seen before include "hard to get out of" , "listening equipment" , "Maze-like structure" , "Maze, tangled network" , "puzzle -" .)

I've seen this clue in the Sydney Morning Herald.
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