Army (noun)

1. A large organized force, typically equipped with weapons, employed in warfare, conflict, or conquest.
2. A large number of people or things regarded as a powerful or formidable force or group.
3. The branch of a country's armed forces responsible for land-based military operations.

Origin:

Late middle english (denoting a body of soldiers in general): from old french armée, from latin armata, feminine past participle of armare 'to arm', from arma 'arms'.

Examples:

1. The army was sent to the border.
2. During the war, the country's army fought bravely to defend their land.
3. The army was made up of soldiers from many countries.
4. Many young men joined the army to serve their country.
5. The army was seen as a formidable opponent.