Broad-brimmed cowboy headgear (3-6,3)

I believe the answer is:

ten-gallon hat

(Other definitions for ten-gallon hat that I've seen before include "Texas headgear" , "Cowboy headgear" , "Item worn by a cowboy" , "Western headgear?" , "It features on the head of a cowboy" .)

I've seen this clue in The Guardian.

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