allies

(noun) the alliance of nations that fought the Axis in World War II and which (with subsequent additions) signed the charter of the United Nations in 1945. Synonyms: Allies.

(noun) in World War I the alliance of Great Britain and France and Russia and all the other nations that became allied with them in opposing the Central Powers. Synonyms: Allies.

(noun) an alliance of nations joining together to fight a common enemy.

(noun) a friendly nation. Synonyms: ally.

(noun) an associate who provides cooperation or assistance. Synonyms: ally, friend. Example: "He's a good ally in fight."

(verb) become an ally or associate, as by a treaty or marriage. Synonyms: ally. Example: "He allied himself with the communists."