army
UK /ˈɑː.mi/ US /ˈɑːr.mi/ Syllables: ar-my
Quick answer
A large, organized group of soldiers trained to fight on land.
An army is a large, organized group of soldiers who are trained to fight on land. A country has an army to defend it, and the army may join with the navy and air force in wars. People who serve in an army are called soldiers, and they follow ranks, from private to general. The word is also used for any large group that works together, such as an army of volunteers or an army of ants. In many countries, a young person may choose to join the army.
"He joined the army right after finishing school."Meanings
- A large, organized group of soldiers trained to fight on land.
- A very large group of people or animals acting together.
Example sentences
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"The army marched across the border at dawn."
Level A2, Meaning 1
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"My uncle joined the army when he was eighteen."
Level A1, Meaning 1
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"An army of volunteers cleaned the beach."
Level B2, Meaning 2
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"The army base is near the river."
Level A2, Meaning 1
Look-alikes and common mistakes
Word family and forms
Forms: armies
Word partners
Words and phrases that often go with "army".
- join the army
- an army officer
- the army base
- an army of volunteers
- a standing army
- serve in the army
Origin
Army came into English in the 1300s from Old French armee, which came from Medieval Latin armata, an armed force. The Latin word is the past participle of armare, to arm. The Spanish word armada, a fleet of warships, is a cousin of the same Latin source.
Checked against: Wiktionary, the free dictionary, Dictionary.com.
How to remember it
Army has arm in it. An army is a group of people with arms, meaning weapons.
Test yourself
Which word fits the gap? "The _____ marched across the border at dawn."
Answer: army
In your own words, what does "army" mean?
A large, organized group of soldiers trained to fight on land.
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Sources and credits
- Wiktionary, the free dictionary (CC BY-SA 4.0) · used for the origin · checked Oct 19, 2026
- Dictionary.com · used for the origin · checked Oct 19, 2026
Last reviewed October 20, 2026. Report a mistake on this page