Definition of six-day war:
(N) :
The Six-Day War, also known as the June War, 1967 Arab–Israeli War or Third Arab–Israeli War, was fought between Israel and a coalition of Arab states, primarily Egypt, Syria, and Jordan from 5 to 10June 1967.
(N) :
a series of armed confrontations between Ugandan and Rwandan forces around the city of Kisangani in the Democratic Republic of the Congo from 5 to 10 June 2000.
(N) :
a brief war fought between the British Empire and several punti clans of the New Territories in Hong Kong from 14–19 April 1899.Hase, Patrick H. The Six-Day War of 1899: Hong Kong in the Age of Imperialism.