- Proper noun. The countries allied against the Axis Powers during World War II. The major signatories included the United States, Soviet Union, Britain, France, Canada(,) and China.
- Proper noun. The countries allied against the Central Powers during World War I, including especially the United Kingdom, the Russian Empire(,) and France.
- Noun. (plural of, ally) .
- Verb. (third-person singular of, ally) .