(chess, informal) A situation in which four of one player's pawns are positioned on adjacent files and adjacent ranks forming a 2x2 square.

(simile) Synonym of cool as a cucumber

(Taoism) The process of cultivation involving sexual intercourse between a man and a woman.

Clamator jacobinus, a bird found in Africa and Asia.

Synonym of Jacobin cuckoo

Synonym of Jacobin cuckoo

(mathematics) An integer that is the product of three instances of another integer; equivalently, it is the product of an integer and its square.

Synonym of Rubik cube. A generic term for the Rubik's Cube type puzzles / Used other than figuratively or idiomatically: see puzzle, cube. / a cubic puzzle

A diplomatic crisis in 1962, between the United States and the Soviet Union, over Soviet nuclear missiles placed in Cuba. It almost led to nuclear war.

(mathematics, obsolete) The sixth power of a number.