Tonkin

geographical name

Ton·​kin ˈtäŋ-kən 

ˈtän-ˈkin,

ˈtäŋ-

variants or Tongking

ˈtäŋ-ˈkiŋ 

region of northern Indochina bordering on China; chief city Hanoi

Note: Since 1946 Tonkin has been the northern part of Vietnam.

Tonkinese

ˌtäŋ-kə-ˈnēz 

ˌtän-

-ˈnēs

adjective or noun

or Tongkingese

ˌtäŋ-kiŋ-ˈēz 

-ˈēs