divider
nounUK /dɪˈvaɪdə/
US /dɪˈvaɪdər/
A thing that keeps two parts apart.
The teacher put a divider between the two desks.
OTHER MEANINGS
2. A tool used to measure or mark distances.
He used a divider to measure the line on the map.
3. A person or thing that causes disagreement between people.
The new rule became a divider among the neighbors.
4. A page with tabs used to separate sections in a binder.
She added a colored divider before each chapter.