allies Meaning, Definition & Usage

1. 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
   
2. 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
   
3. noun an alliance of nations joining together to fight a common enemy
   
4. noun a friendly nation
   ally.
   
5. noun an associate who provides cooperation or assistance
   friend; ally.
   
   • he's a good ally in fight
6. verb become an ally or associate, as by a treaty or marriage
   ally.
   
   • He allied himself with the Communists

WordNet