(military, historical) A World War II code name for patrols along the British coastline to intercept enemy aircraft, originally intended to warn of invasion in 1940.

Discriminatory against African Americans. / Segregated between African Americans and Caucasians.

To work towards legislation that incorporates a discriminatory caste system or racial segregation.

Discrimination against women / Misogyny. / Segregation of the genders.

(idiomatic) In a straight line distance between two locations, as opposed to the road distance or over land distance.

Wrinkles at the outer corners of the eye.

(chiefly US, idiomatic) To recognize that one has been shown to be mistaken or outdone, especially by admitting that one has made a humiliating error.

The common European black crow Corvus corone. / The American black vulture Coragyps atratus.

(nautical) A small open-top shelter, originally a cask, on the top of the foremast, large enough to accommodate a lookout. It was used by whalers to watch for a blow (spout), or in icebound waters to seek a channel.

(bowdlerization, euphemistic, US) Synonym of Jesus Christ (“exclamation of anger, surprise, etc.”)