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In page Teak:

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The English word teak comes from Tamil tekku (தேக்கு), Telugu teku (టేకు), Malayalam thekku (തേക്ക്), Sinhala thekka (තේක්ක), Odia ଶାଗୁଆନ and Kannada tega (ತೇಗ) via the Portuguese teca.[1] In Bangladesh and West Bengal, the species is known as segun (সেগুন). Central Province teak and Nagpur teak are named for those regions of India.[2]