Al‐ly″ (�), n.; pl.Allies (�). [See Ally, v.] 1. A relative; a kinsman. Shak.
2. One united to another by treaty or league; — usually applied to sovereigns or states; a confederate.
The English soldiers and their French allies.
Macaulay.
3. Anything associated with another as a helper; an auxiliary.
Science, instead of being the enemy of religion, becomes its ally.
Buckle.
4. Anything akin to another by structure, etc.