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English definition of “buffer”

buffer

noun [C]
 
 
/ˈbʌfər/
someone or something that provides protection against difficult situations, problems, angry people, etc.: serve as/act as/be a buffer Savings can be a buffer during times of financial hardship.a buffer against sth A special committee was formed to serve as a buffer against customer complaints.a buffer between sth and sth HR was called in to act as a buffer between managers and disgruntled employees.
IT the part of a computer's memory that temporarily stores information before exchanging it with another piece of equipment such as a printer, keyboard, or external drive
(Definition of buffer noun from the Cambridge Business English Dictionary © Cambridge University Press)
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