Ally

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.

A relative; a kinsman.

One united to another by treaty or league; -- usually applied to sovereigns or states; a confederate.

Anything associated with another as a helper; an auxiliary.

Anything akin to another by structure, etc.

See Alley, a marble or taw.