Question

to have an axe to grind give the meaning idioms

Answer 1

to have an axe to grind. to have a strong personal opinion about something that you want people to accept and that is the reason why you do something: Environmentalists have no political axe to grind - they just want to save the planet.

Answer 2

Hey mate here is the answer to your question.
It means to have a strong personal opinion about something that you want people to accept.

Hope it helps you.
:)