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Cossack

American  
[kos-ak, -uhk] / ˈkɒs æk, -ək /

noun

Cossacks plural
  1. (especially in czarist Russia) a person belonging to any of certain groups of Slavs living chiefly in the southern part of Russia in Europe and forming an elite corps of horsemen.


Cossack British  
/ ˈkɒsæk /

noun

  1. (formerly) any of the free warrior-peasants of chiefly East Slavonic descent who lived in communes, esp in Ukraine, and served as cavalry under the tsars

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. of, relating to, or characteristic of the Cossacks

    a Cossack dance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of Cossack

1590–1600; < Polish kozak or Ukrainian kozák, ultimately < a Turkic word taken to mean “adventurer, freebooter,” adopted as an ethnic name by Turkic tribal groups of the Eurasian steppes

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Before heading off to the front, Shaman, his army call sign, was manning the stand of the "Berkut Military-Sports Cossack Club" in the shopping centre.

From Barron's Feb. 13, 2026

Then, down the broad marble staircase of Odessa marches a phalanx of Cossack soldiers.

From The Wall Street Journal Dec. 12, 2025

But after helping them achieve victory, their Muscovite allies sought to dominate them, leading to another Ukrainian Cossack rebellion in 1708 that soon allied with Sweden.

From Salon Jul. 29, 2023

Bakhmut, a former Cossack outpost that was a salt-mining town at the war’s outset, happened to be where two armies collided.

From New York Times May 22, 2023

If there was a Cossack in his family tree, that particular branch would have been grafted in blood and suffering.

From "The City Beautiful" by Aden Polydoros

In the Black Sea resort of Anapa, Cossacks have been deployed to keep order in queues.

From BBC Jul. 8, 2026

One of Babel’s “Red Cavalry” stories tells of Lyutov, a Jewish intellectual who rode with the Cossacks, as Babel did, trying to prove himself a man on their terms.

From The Wall Street Journal May 22, 2026

Ukrainians learned that the hard way in the mid-1600s when Ukrainian Cossacks rebelled against their Catholic Polish-Lithuanian Commonwealth rulers and established an independent state, seeking protection from their Orthodox co-religionists in Muscovy.

From Salon Jul. 29, 2023

The models for the Ukrainian Cossacks in one of his most famous paintings, “Reply of the Zaporozhian Cossacks,” were friends and academics from the university in St. Petersburg.

From Washington Post Dec. 8, 2022

The next show wouldn’t begin until three, which gave me plenty of time to scout out the area and see where the Cossacks were rooming.

From "The City Beautiful" by Aden Polydoros

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