eraser[ē rā′sər, i-]
Pencil top erasers.
a thing that erases; specif., a device made of rubber for erasing ink or pencil marks, or a pad of felt or cloth for removing chalk marks from a blackboard
One that erases, especially an implement, such as a piece of rubber or a pad of felt, used for erasing marks made by pencil or chalk.
erase + -er