Meaning of BUFFER in English

BUFFER

~ 1

■ noun

1》 ( ~s ) Brit. a pair of shock-absorbing pistons projecting from a cross-beam at the end of a railway track or on a railway vehicle.

2》 a person or thing that reduces a shock or forms a barrier between adversaries.

3》 (also ~ solution ) Chemistry a solution which resists changes in pH when acid or alkali is added to it.

4》 Computing a temporary memory area or queue used when creating or editing text, or when transferring data.

■ verb

1》 lessen or moderate the impact of.

2》 treat with a chemical ~.

Origin

C19: prob. from obs. buff (v.), imitative of the sound of a blow to a soft body.

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~ 2

■ noun Brit. informal a foolishly old-fashioned or incompetent elderly man.

Origin

C18: prob. from obs. buff (see ~ 1 ), or from dialect buff 'stutter, splutter'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.