Tonkin

Tonkin · proper noun¹

From a medieval diminutive form of the given name Thomas.

Tonkin · proper noun²

1. Middle Chinese · derived from東京
2. Vietnamese · derived fromĐông Kinh“Hanoi; its former kingdom”
3. French · borrowed fromTonkin
4. English todayTonkin

From French Tonkin, from Vietnamese Đông Kinh (“Hanoi; its former kingdom”), from đông (“east, eastern”) + kinh (“capital”), from Middle Chinese 東京 (tuwng kjaeng), q.v. Cognate, through Middle Chinese, of Tokyo.