An ally is a friend who helps another person or country in some way.
Think of it like this: when two countries work together on something important, one might be the strong one and the other might need help. But both are working as allies to achieve their goal. For example, during World War II, England and America were allies because they fought together against a common enemy. Today, some countries might join forces with others to tackle issues like climate change or poverty. In these cases, they're acting as allies to make the world a better place.
A narrow street or passageway, especially one through the middle of a block giving access to the rear of lots or buildings.
Example: The parking lot to my friend's apartment building is in the alley.
A glass marble or taw.
A person, group, or state (etc) which is associated with another for a common cause; one united to another by treaty or common purpose; a confederate.
Example: the two countries were allies in WWI
To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy.
