[n] an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)
[n] a cushion-like device that reduces shock due to contact
[n] a power tool used to buff surfaces
[n] (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
[n] an inclined metal frame at the front of a locomotive to clear the track
[n] an ionic compound that resists changes in its pH
[v] add a buffer to; of solutions; "buffered saline solution for the eyes"
[v] protect from impact; "cushion the blow"