plural buffers
1
: something that gives protection by separating things : a protective barrier
Thick walls serve as a buffer from/against the sounds of the city.
—often used figurativelyShe had to act as a buffer between the two brothers, who wouldn't stop arguing.
It's important to save money as a buffer against times of illness or the loss of your job.
2
computers
: a place in the memory of a computer where information is stored for a short time
3
chiefly British
: either one of two devices with metal springs that are connected to the front and back of railroad cars in order to reduce shock when the train hits things
buffers; buffered; buffering
1
: to protect (something) from something
The trees help buffer the house from the hot summer sun.
2
: to lessen the harmful effects of (something)
The wall buffers the noise of the traffic.
3
computers
: to put (something, such as data) in a buffer
Cite this Entry
“Buffer.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/buffer. Accessed 22 Jun. 2026.
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