Adhesive teeth quite lacking? (5)

I believe the answer is:

gummy

This clue is a double definition.

'adhesive' is the first definition.
('gummy' can be similar in meaning to 'adhesive')

'teeth quite lacking?' is the second definition.

(Other definitions for gummy that I've seen before include "Sticky" , "Toothless" .)

I've seen this clue in The Guardian.

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