Buff·er n.
 1. Mech. (a) 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. (b) A pad or cushion forming the end of a fender, which receives the blow; -- sometimes called buffing apparatus.
 2. One who polishes with a buff.
 3. A wheel for buffing; a buff.
 4. A good-humored, slow-witted fellow; -- usually said of an elderly man. [Colloq.]

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 Buff·ing ap·pa·ra·tus See Buffer, 1.

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