There are only two countries in the world whose name starts with 'tur' (in English), they are Turkey and Turkmenistan, which are not islands and are no where near the Pacific Ocean.
Trinidad and Tobago. You also have Turks and Caicos,
Turkey is in Eurasia.
One vegetable that starts with "tur" is turnip.
Both TURKEY and TURKMENISTAN qualify as Asian countries that start with "Tur". However, Turkmenistan is the only country of those two that is wholly in Asia.
There are only two countries that begin with 'tur', one is Turkmenistan, which is considered to be in Asia; and Turkey, considered to be Eurasian. Perhaps you were thinking of Tunisia in northernmost Africa.
Turbine.
Turku
Turkana
toronto
Turin
That would be Turku