panamaPronunciation: /ˈpanəmɑː, ˌpanəˈmɑː/ (also panama hat)Definition of panama noun a man’s wide-brimmed hat of straw-like material, originally made from the leaves of a particular tropical palm tree. Origin: mid 19th century: named after the country of Panamapanama in other Oxford dictionaries Definition of panama in the US English dictionary