Definitions

1. noun

A historical region in northern Vietnam, now part of northern Vietnam, including the Red River Delta.

“The Tonkin Gulf was a key location in the Vietnam War, with the USS Maddox being involved in a famous incident in 1964.”

2. proper noun

A former province of Vietnam, now divided into several provinces, including Hanoi, the capital of Vietnam.

“The Tonkin province was a major center of trade and commerce in northern Vietnam.”

3. verb

To cheat or deceive someone, especially by using clever or dishonest means.

“He was accused of tonking his opponents in the business deal, by hiding important information from them.”