n thing that divides sth 分隔物
*a room divider, ie a screen, etc that divides a room into two parts 分隔房间的隔板.

n[C]
something that divides something else into parts
　a room divider
　alphabetical file dividers
AmE a piece of land that separates traffic travelling in opposite directions on a main road
British Equivalent: reservation
　Police saw his Mercedes speeding along the center divider.

dividers [plural]
an instrument used for measuring or marking lines or angles, consisting of two pointed pieces of metal joined together at the top