Bound to be tight with added alcohol (5)

I believe the answer is:

laced

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'added alcohol' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for laced that I've seen before include "Fortified" , "Drinks may be" , "Intertwined" , "with extra spirit" , "Administered a beating" .)

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

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