| Noun | 1. | Allies - 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. | Allies - 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. | allies - an alliance of nations joining together to fight a common enemy | |