noun

• (uncountable) Various sounds, usually unwanted or unpleasant.
  "He knew that it was trash day, when the garbage collectors made all the noise."
• (technology) Any part of a signal or data that reduces the clarity, precision, or quality of the desired output.
  "signal-to-noise ratio"
• (statistics) Variation or deviation generated by random fluctuations.
• (figurative, by extension) Unwanted fuss or bustle; useless activity.
  "In order to provide coherence and confidence, the leader must dramatically turn down the noise level in the organization, eliminate any unnecessary distractions that inevitably get in the way of execution, and banish the fear of uncertainty."

verb

• (intransitive) To make a noise; to sound.
  "Those terrours, which thou speak'st of, did me none ; I never fear'd they could, though noising loud And threatening nigh"
• (transitive) To spread news of; to spread as rumor or gossip.
  "When this was noysed aboute, the multitude cam togedder and were astonyed, because that every man herde them speake in his awne tongue."