Noun

(en noun)

A quick, brilliant, and highly successful act; a triumph.

* 2000 , P. E. Bryden, The Ontario-Quebec Axis: Postwar Strategies in Intergovernmental Negotiations'', Edgar-André Montigny, Anne Lorene Chambers (editors), ''Ontario Since Confederation: A Reader , page 399,

The conference was a major coup for Robarts, who received congratulations for his 'expert handling' of the 'risky venture.'

* 2004 , Charles R. Geisst, Wall Street: A History , page 116,

While the price was considered a coup for Morgan, enhancing his reputation on Wall Street, Carnegie had a different explanation for his selling price.

* 2005 , Laryce Henderson Rybka, Legacy of the Lamp , page 252,

"It was quite a coup for Pullen Park to get it. It had been in storage for awhile, and several parks in other places wanted to purchase it."

* 2014 , Jamie Jackson, " Ángel di María says Manchester United were the ‘only club’ after Real", The Guardian , 26 August 2014:

Yet the capture of Di María, who was the man of the match when Real won a 10th Champions League in May, represents something a coup for United considering the club are not in Europe’s premier club competition and need to strengthen their squad after the team have let five points slip from the first two matches.

(US, historical, of Native Americans) A blow against an enemy delivered in a way that shows bravery.

* 2007 , James Mooney, George Bird Grinnell, Edmund Nequatewa, Native American Ways: Four Paths to Enlightenment , page 316,

Thus, for a horseman to ride over and knock down an enemy, who was on foot, was regarded among the Blackfeet as a coup , for the horseman might be shot at close quarters, or might receive a lance thrust.

A .

* 1985 , Christopher S. Clapham, Third World Politics: An Introduction , page 137,

Military coups and the military regimes which follow from them are so much a feature of third world politics that their presence or absence in any given region might almost be taken as a rough and ready touchstone of third worldliness.

* 2003 , April A. Gordon, Nigeria's Diverse Peoples: A Reference Sourcebook , page 130,

It was the military's discontent with what was happening in the country and in the military that led to the first military coup in January 1966. The First Republic was brought to an ignoble end and replaced with a military government.

* {{quote-magazine, date=2013-08-23, author=(Jonathan Steele)

, volume=189, issue=11, page=18, magazine=(The Guardian Weekly) , title= The west has little influence in Egypt , passage=The coup was well-planned. Fuel was artificially held back so as to create shortages and dissatisfaction with Brotherhood rule. The old state-controlled unions mounted public sector strikes that further sabotaged the economy and annoyed people. Police-controlled thugs who had been used against the Tahrir Square demonstrations in 2011 came back into action.}}

(by extension) A takeover of one group by another.

Noun

(en noun)

A political upheaval in a government or nation state characterized by great change.

The removal and replacement of a government.

Rotation: the turning of an object around an axis.

* 1912 , P. M. Heldt, The Gasoline Automobile: Its Design and Construction, Volume II: Transmission, Running Gear and Control , The Horseless Age Co. (1913), page 147:

The ratio between the speeds of revolution of wheel and disc is substantially equal to the reciprocal of the ratio between the diameter of the wheel and the diameter of the mean contact circle on the disc.

A rotation: one complete turn of an object during rotation.

* 1864 , D. M. Warren, The Common-School Geography , Revised Edition, H. Cowperthwait & Co., page 6:

The Earth has two motions: a daily revolution (or turning around) upon its axis , and a yearly course around the sun.

* 1878 , George Fleming, A Text-Book of Veterinary Obstetrics , Baillière, Tindall, & Cox, page 123:

Numerous cases are recorded which incontestibly prove that during pregnancy, the uterus perform a half or even a complete revolution , on itself, producing torsion of the cervix

In the case of celestial bodies - the traversal of one body through an orbit around another body.

A sudden, vast change in a situation, a discipline, or the way of thinking and behaving.