Haiphong pronunciation (help · info) (Vietnamese: Hải Phòng; Hán Tự: 海 防) is the third most populous city in Vietnam.
noun . a seaport in N Vietnam, near the Gulf of Tonkin. 1,190,900.
Haiphong (hīfŏng`), city (1989 pop. 1,447,523), NE Vietnam, on a large branch of the Red River delta c.10 mi (20 km) from the Gulf of Tonkin.