headdress that protects the head from bad weather; has shaped crown and usually a brim
source: WordNet 3.0
an informal term for a person's role
He took off his politician's hat and talked frankly.
source: WordNet 3.0
A covering for the head; esp., one with a crown and brim, made of various materials, and worn by men or women for protecting the head from the sun or weather, or for ornament.