a Communist-led army and guerrilla force in South Vietnam that fought its government and was supported by North Vietnam
2.
a member or supporter of this force
adjective
3.
of or pertaining to this force or one of its members or supporters
Also: Viet Cong
Word origin
[1960–65; ‹ Vietnamese Việt-cộng]This word is first recorded in the period 1960–65. Other words that entered Englishat around the same time include: bicycle kick, disco, parvovirus, pop art, tag question