Flash the pearly whites (5)

I believe the answer is:

smile

'flash the pearly whites' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for smile that I've seen before include "Facial expression showing pleasure" , "Pleasant expression" , "Visually express amusement" , "express pleasure" , "Show happiness" .)

I've seen this clue in the USA Today and the Universal.

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