ar·​my | \ ˈär-mē How to pronounce army (audio) \
plural armies

Definition of army

1a : a large organized body of armed personnel trained for war especially on land
b : a unit capable of independent action and consisting usually of a headquarters, two or more corps, and auxiliary troops
c often capitalized : the complete military organization of a nation for land warfare
2 : a great multitude an army of birds
3 : a body of persons organized to advance a cause

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Synonyms for army


array, battalion, host, legion

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Examples of army in a Sentence

the armies of Alexander the Great He left home and joined the army after he graduated from high school. The company employs an army of lawyers to handle its legal affairs. They sent in a whole army of trained technicians. The organization was founded by a dedicated army of volunteers.
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Recent Examples on the Web

Bochy was born in Landes de Bussac, France, where his father was stationed in the army. Henry Schulman,, "Giants’ Bruce Bochy asked to manage Team France in next World Baseball Classic," 12 June 2019 Prince William and Prince Charles are royal colonels, which is a position given by the Queen to a member of the royal family that serves as Colonel-in-Chief of a regiment in the British army or navy., "Why Doesn't Prince Harry Ride on Horseback During Trooping the Colour Like Prince William?," 8 June 2019 Harry spent a decade in the army, eventually working his way up to the rank of Captain. Kayleigh Roberts, Marie Claire, "The Queen Forced Prince Harry to Make a Heartbreaking Choice About What to Do with His Life," 25 May 2019 After serving in the army from 1988 to 1996, Thomas re-enlisted in the Delaware National Guard in 2006. Colleen Johnson, Woman's Day, "How My Veteran Husband Copes with His War Injuries," 19 May 2019 Last summer, Ratajkowski was spotted in an army green sleeveless crop top, black biker shorts from Kith, Yeezy sneakers, and a crossbody bag from Laval. Nicole Saunders, Harper's BAZAAR, "Emily Ratajkowski's Summer Style Muse Is Princess Diana," 17 Apr. 2019 Loveleen Mann, an Indian lawyer and former army captain, who walked in the mostly rural and conservative state of Rajasthan, took to describing Paul as her boss. National Geographic, "Could a woman walk around the world today?," 5 Apr. 2019 This past week, celebrities from around the world were hitting the Cannes red carpet—more often than not, drowning in feathered gowns, the trains of which required a veritable army of assistants to handle. Chloe Foussianes, Town & Country, "Helen Mirren Debuts Pink Hair on the Cannes Red Carpet," 28 May 2019 And then there’s Daenerys, who built up an entire army only to suddenly descend into total madness, using Drogon to burn everything down at King’s Landing in episode 5. Christian Allaire, Vogue, "Why the Women of Game of Thrones Deserved Better," 20 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'army.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of army

circa 1522, in the meaning defined at sense 1a

History and Etymology for army

Middle English armee, from Anglo-French, from Medieval Latin armata — more at armada

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Statistics for army

Last Updated

20 Jun 2019

Look-up Popularity

Time Traveler for army

The first known use of army was circa 1522

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More Definitions for army



English Language Learners Definition of army

: a large group of soldiers organized to fight battles on land
: the part of a country's military forces that includes soldiers who are trained to fight on land
: a large number of people or things that are involved in some activity together


ar·​my | \ ˈär-mē How to pronounce army (audio) \
plural armies

Kids Definition of army

1 : a large body of soldiers trained for land warfare
2 often capitalized : the complete military organization of a nation for land warfare
3 : a great number of people or things an army of volunteers

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More from Merriam-Webster on army

Rhyming Dictionary: Words that rhyme with army

Thesaurus: All synonyms and antonyms for army

Spanish Central: Translation of army

Nglish: Translation of army for Spanish Speakers

Britannica English: Translation of army for Arabic Speakers Encyclopedia article about army

Comments on army

What made you want to look up army? Please tell us where you read or heard it (including the quote, if possible).


to take the place or position of

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