1) Catch 2) Doorstopper 3) Enormous book, so to speak 4) Entrance improver 5) Floor wedge 6) It can make something ajar 7) It prevents slamming 8) Slam preventer 9) Stop 10) Wall protector 11) Wedge for an entrance 1) Door stopper 2) Shim 3) Wedge 
A doorstop (also door stopper or door stop) is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. Alternatively, a doorstop can be a thin slat built inside a door frame to prevent a door from swinging through when closed. A door stop (applied) may also be a small bracket or 90 degree piece of meta...
• (n.) The block or strip of wood or similar material which stops, at the right place, the shutting of a door.
A braking manoeuvre accomplished with the kind assistance of a motorist.
usually decorative and invariably heavy object used to prevent doors from swinging shut. Doorstops came into use about 1775 following the ... [1 related articles]
See dump.
Door'stop` noun (Carp.) The block or strip of wood or similar material which stops, at the right place, the shutting of a door. 
[n] - a stop that keeps open doors from moving
doorstopper noun a stop that keeps open doors from moving
a device for holding a door open, as a wedge or small weight. · Also called(in a doorframe) a strip or projecting surface against which the door closes. · a device for preventing a door from striking a wall or an object on a wall, as a small rubber-covered projection.