funnel: (nautical) smokestack consisting of a shaft for ventilation or the passage of smoke (especially the smokestack of a ship)
smokestack: a large tall chimney through which combustion gases and smoke can be evacuated
vedic literature: (from the Sanskrit word for `knowledge') any of the most ancient sacred writings of Hinduism written in early Sanskrit; traditionally believed to comprise the Samhitas, the Brahmanas, the Aranyakas, and the Upanishads