army

noun10

1. •
   a large force of soldiers that a country keeps ready to fight mainly on land

   • The army was sent in to quell the uprising.
2. •
   Used absolutely for that entire branch of the armed forces.

   • The army received a bigger share of this year's budget increase than the navy or air force.
3. •
   The governmental agency in charge of a state's army.

   • The army opposed the legislature's involvement.
4. •
   (figurative) A large group of people working toward the same purpose.

   • It took an army of accountants to uncover the fraud.
   • On sunny days the beaches draw armies of tourists of all kinds.
5. •
   (figurative) A large group of animals, especially caterpillars or social insects working toward the same purpose.

   • Our house is being attacked by an army of ants.
6. •
   (figurative) Any multitude.

   • There was an army of construction cranes working on building the skyscraper.
7. •
   The military as a whole.

   • The People's Liberation Army Navy of China.
   • The Yugoslav Army consisted of the War Navy, Ground Forces, and Air Force.
8. •
   Within a vast military, a very large tactical contingent (e.g. a number of divisions).

   • The Fourth Army suffered such losses that its remainders were merged into the Second Army, also deployed on the Western front.
9. •
   (slang) The fandom of the K-pop boy band BTS.

   • ARMY are clever, too: they urged fans not to buy J-Hope's mixtape Hope World on its release date, having worked out that delaying by a day would result in a higher ranking in the Billboard charts. — 2018
10. •
    (slang) An individual fan of the K-pop boy band BTS.

    • Entering the theater, I expected the room to be filled with ARMYs decked out in their BTS merchandise. — 2018