They meet for a bite (5)

I believe the answer is:

teeth

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'for a bite' is the definition.
(thesaurus)

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

(Other definitions for teeth that I've seen before include "Genuine effectiveness" , "Structures in the jaw" , "Those of wisdom" , "Projections on a gear" , "Effective power" .)

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

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