定義 / Definition
[noun]
・someone who supports you, especially when other people are against you; a country that has agreed to help another country, especially in a war.
・a person or organization that cooperates with or helps another in a particular activity.
[verb]
・combine or unite a resource or commodity with (another) for mutual benefit.
— その他 例文 —
The United States allied itself with Japan.
米国は日本と同盟を結んだ。
During the fight, he was my ally.
争いの時彼は私の味方でした。
The US and its allies entered Iraq in March 2003.
アメリカとその同盟国が2003年3月にイラク入りした。
