noun

• (usually in the plural) A rumor.
  "There are whispers of rebellion all around."
• (figurative) A faint trace or hint (of something).
  "The soup had just a whisper of basil."
• (Internet) A private message to an individual in a chat room.
  "The invisibility of private interactions in the form of whispers resolved an ethical concern in the research but reduced our ability to gauge the volume of interaction […]"

verb

• (intransitive) To speak softly or under one's breath, so as to be heard only by one near at hand; to utter words without sonant breath; to talk without that vibration of the vocal cords which gives sonorous, or vocal, sound.
  "I can hear them whisper as we pass by It's a bad sign, bad sign"
• (transitive) To say (something) softly or under one's breath, so as to be heard only by one near at hand; to utter (something) without sonant breath, without that vibration of the vocal cords which gives sonorous, or vocal, sound.
  "Whether he whispered sweet nothings to her in Stengelese is not known, but he did call her "the best catch I ever made in my career.""
• (transitive) To mention privately and confidentially, or in a whisper.
  "They might buzz and whisper it one to another."
• (intransitive) To make a low, sibilant sound.
  "the hollow, whispering breeze"