noun a wheel for buffing; a buff.
2. buffer ·noun one who polishes with a buff.
3. buffer ·noun a good-humored, slow-witted fellow;
usually said of an elderly man.
4. buffer ·noun a pad or cushion forming the end of a fender, which receives the blow;
sometimes called buffing apparatus.
5. buffer ·noun 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.