Used teeth around a decoy (4)

I believe the answer is:

bait

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'a decoy' is the definition.
(synonyms)

'used teeth around' is the wordplay.
'used' becomes 'bai' (I can't justify this - if you can you should believe this answer much more).
'teeth' becomes 'denture' (I have seen 'False teeth ' mean 'denture' so perhaps 'teeth' could also mean 'denture').
'around' indicates the central letters.
The central letter of 'denture' is 't'.
'bai'+'t'='BAIT'

Can you help me to learn more?

(Other definitions for bait that I've seen before include "Set a trap with food" , "Boilie, for example" , "Food used as lure" , "Enticement, lure" , "Deliberately annoy or taunt" .)

I've seen this clue in The Daily Express.

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