teraiPronunciation: /təˈrʌɪ/ (also terai hat)Definition of terai noun 1a wide-brimmed felt hat, typically with a double crown, worn chiefly by travellers in subtropical regions. 2a belt of marshy jungle lying between the lower foothills of the Himalayas and the plains. Origin: late 19th century: from Hindi tarāī 'marshy lowlands'terai in other Oxford dictionaries Definition of terai in the US English dictionary