Keep drawing attention to large jug (6)

I believe the answer is:

flagon

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'large jug' is the definition.
(a flagon is a large jug)

I don't understand the remainder of the clue.

(Other definitions for flagon that I've seen before include "Large round bottle as for cider" , "Large wine-bottle, jug" , "Drinking vessel" , "Wine jug" , "Large wine vessel" .)

I've seen this clue in The Times.

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