say it: AL-ahyz
allies is a noun meaning "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". It carries 3 recorded senses.
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
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
an alliance of nations joining together to fight a common enemy
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for allies come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.