Buffer

An elastic apparatus or fender, for deadening the jar caused by the collision of bodies; as, a buffer at the end of a railroad car.

A pad or cushion forming the end of a fender, which receives the blow; -- sometimes called buffing apparatus.

One who polishes with a buff.

A wheel for buffing; a buff.

A good-humored, slow-witted fellow; -- usually said of an elderly man.

(chemistry) an ionic compound that resists changes in its pH

(computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system

a power tool used to buff surfaces

an inclined metal frame at the front of a locomotive to clear the track

a neutral zone between two rival powers that is created in order to diminish the danger of conflict