出典:Wiktionary
出典:『Wiktionary』 (2026/02/27 23:12 UTC 版)
From a medieval diminutive form of the given name Thomas.
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.
Tonkin