A lightweight, waterproof jacket or raincoat, typically made of nylon and packable for easy carrying.
From French 'cagoule', itself from Italian 'cagozzo' or ultimately from Latin 'cuculla' (hood or cowl). British English adopted it as a term for a specific style of rain jacket.
The cagoule became an iconic symbol of British outdoors culture—something about a nylon pullover raincoat says 'British rambler' more than almost anything else.
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