divider

noun

1. One who or that which divides or separates.

   “I was greatly his inferior, but love is a quick divider of shares: he that gathers much has nothing over, and he that gathers little has no lack.”

2. One who or that which divides or separates.

   “It is perfectly possible to separate one area of a room from another, or even to create an entirely new room, with a lightweight room divider that assembles with a minimum of fuss.”

3. One who or that which divides or separates.
4. One who or that which divides or separates.
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.