ally · noun C /ˈæ.lɑɪ/Full view
ally (PERSON)
C1 someone who supports you, especially when other people are against you
Dictionary example:

He is generally considered to be the Prime Minister's closest political ally.

Learner example:

The participants are under pressure and they have to find allies and make decisions. (Certificate in Advanced English; C1; Spanish)

ally (COUNTRY)
C2 a country that has agreed to help another country, especially in a war
Dictionary example:

During World War One, Turkey and Germany were allies.

Learner example:

So the allies didn't exclude the Germanies from the world community, including organizations like NATO, the Warsaw Pact or the UN. (Certificate of Proficiency in English; C2; German)

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