DEF: a country or a person that has agreed to give help and support to a friend.
EX: 1. The US and the UK were allies in World War 2. He is my ally in our fight against poverty in the world.
Merriam-Webster Online Dictionary
ally (verb)transitive verb
intransitive verb
to unite or form a connection or between - relation associate allied himself with a wealthy family by marriage to form or enter into an - alliance two factions allying with each other
1.
a or state associated with another by treaty or league - sovereign
2.
a plant or animal linked to another by genetic or proximity - taxonomic
3.
one that is associated with another as a helper - auxiliary
