Overdraw an account (10)

I believe the answer is:

exaggerate

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'overdraw' is the definition.
(I know that overdraw can be written as exaggerate)

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

(Other definitions for exaggerate that I've seen before include "Overdo" , "Overstate unduly" , "Overstate; intensify" , "Stretch" .)

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

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