Military headgear with a peak and a plume (5)

I believe the answer is:

shako

(Other definitions for shako that I've seen before include "Capital cover" , "Tall military cap" , "military headdress" , "Cylindrical military hat with peak and plume? Really has, ok" , "Tall plumed hat (mil.)" .)

I've seen this clue in The Guardian.

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