Pronunciation: (ton'kin', tong'-), [key]
1. a former state in N French Indochina, now part of Vietnam.
2. Gulf of, an arm of the South China Sea, W of Hainan. 300 mi. (485 km) long. Also,Tongking,Ton•kingPronunciation: (ton'king', tong'-). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.