step between (someone or something)
1. To walk carefully or delicately between two or more people or things. I stepped between the people sleeping on the living room floor and made my way out of the house. You'll have to step between these two bookshelves to reach the back room where I keep the most valuable antiques.
2. To move to a position in between two people or things. The teacher stepped between the two arguing students before they came to blows. The protestor stepped between the bulldozer and the historic building.
3. To intervene or intercede in an dispute between two people or groups. The United Nations has finally decided to step between the two nations to prevent an all-out war. It always fell to me to step between my father and older brother whenever they started butting heads about some issue or other.
step between (someone or something and someone or something else)
to move between things or people. Jeff stepped between Judy and the gunman. He stepped between Judy and the wall.