divider

1. One who or that which divides or separates.
2. A physical object for dividing up a space.
3. A piece of card placed in a ring binder to separate groups of documents.
4. An electronic device for separating a signal, frequency, etc., into two or more parts.
5. A device resembling a drawing compass and used to transfer measurements of length.
6. The median (US) or central reservation (UK) of a highway or other road where traffic in opposite directions are kept separated.

Plural dividers