buffer

noun

1.
(chemistry) an ionic compound that resists changes in its pH
Derived from:
buffer
2.
a neutral zone between two rival powers that is created in order to diminish the danger of conflict
3.
an inclined metal frame at the front of a locomotive to clear the track
4.
(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
5.
a power tool used to buff surfaces
Derived from:
buff
6.
a cushion-like device that reduces shock due to an impact
Derived from:
buffer
7.
an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)
Derived from:
buff