Definitions of noise:

• noun:   incomprehensibility resulting from irrelevant information or meaningless facts or remarks

  Example: "All the noise in his speech concealed the fact that he didn't have anything to say"

• noun:   the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience

  Example: "Modern music is just noise to me"

• noun:   a loud outcry of protest or complaint

  Example: "The announcement of the election recount caused a lot of noise"

• noun:   sound of any kind (especially unintelligible or dissonant sound)

  Example: "He enjoyed the street noises"

• noun:   electrical or acoustic activity that can disturb communication
• noun:   the quality of lacking any predictable order or plan
• verb:   emit a noise