1a sound, especially one that is loud or unpleasant or that causes disturbance:making a noise like a pigwhat’s that rustling noise outside the door?
[mass noun] a series or combination of loud, confused sounds, especially when causing disturbance:she was dazed with the heat and noisevibration and noise from traffic
(noises) conventional remarks made to express something:the government made tough noises about defending sterling
2 [mass noun] technical irregular fluctuations that accompany a transmitted electrical signal but are not part of it and tend to obscure it:the enhancer can improve the video signal quality, reducing noise and increasing image sharpness
random fluctuations that obscure or do not contain meaningful data or other information:over half the magnitude of the differences came from noise in the data
1 [with object] (usually be noised about) talk about or make known publicly:you’ve discovered something that should not be noised about
2 [no object] make much noise:rook, crow and jackdaw—noising loud
make a noise
speak or act in a way designed to attract a lot of attention or publicity:he knows how to make a noise and claim police harassment
sounds made offstage to be heard by the audience of a play.