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English definition of “buffer”

buffer

noun uk   /ˈbʌf.ər/ us    //

buffer noun (PROTECTION)

[C] something or someone that helps protect from harm: I bought a house as a buffer against inflation. [C] the metal parts at the front and back of a train or at the end of a track, that help protect the train and reduce damage if the train hits something [C or U] a chemical that keeps a liquid from becoming more or less acidic

buffer noun (EXTRA SUPPLY)

[C] an extra supply of materials that a company keeps in order to prevent a situation where none are available: "Just-in-time production" means that no buffer stocks are held in the factory.

buffer noun (MAN)

[C] UK old-fashioned a silly old man: Silly old buffer!

buffer

verb uk   /ˈbʌf.ər/ us    //

buffer verb (PROVIDE PROTECTION)

[T] to provide protection against harm

buffer verb (STORE INFORMATION)

[I or T] When a computer buffers information or buffers, it stores information temporarily in its memory while dealing with it or sending it.
(Definition of buffer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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