(historical) Southern United States racist and especially segregationist policies in the late 1800s and early to mid 1900s, taken collectively.
Noun
(military) A World War II code name for patrols along the British coastline to intercept enemy aircraft, originally intended to warn of invasion in 1940.
(engineering) A double-action planing tool invented by Joseph Whitworth, in which the blade ‘jumps’ to face the other way on the back-stroke.
(rail transport) A tool for bending railway rails, by holding the rail with two arms and pushing a screw into the other side.
Adjective
Discriminatory against African Americans.
Segregated between African Americans and Caucasians.