doorstop

名词 doorstop:

1. a stop that keeps open doors from moving
   同义词：doorstopper

1. The door was held open by a doorstop.
   那门用了门碰头，一直开著。

door.stop

n.（名词）
A wedge inserted beneath a door to hold it open at a desired position.
制门板：插在门下使门开到合适的程度固定的制门板
A weight or spring that prevents a door from slamming.
制门器：防止门关得太猛的物体或弹簧
A rubber-tipped projection attached to a wall to protect it from the impact of an opening door.
防撞门器：固定在墙上防止门撞墙的带胶头的突出物