a friendly nation an associate who provides assistance; "he's a good ally in fight"; "they were friends of the workers"
To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy; often followed by to or with
To connect or form a relation between by similitude, resemblance, friendship, or love
If you ally yourself with someone or something, you give your support to them. He will have no choice but to ally himself with the new movement. see also allied. allied allying allies to help and support other people or countries, especially in a war or disagreement ally yourself to/with sb
a friendly nation an associate who provides assistance; "he's a good ally in fight"; "they were friends of the workers" become an ally or associate, as by a treaty or marriage; "He allied himself with the Communists
To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy; - often followed by to or with
If you describe someone as your ally, you mean that they help and support you, especially when other people are opposing you. He is a close ally of the Prime Minister = supporter, friend enemy