Definition of "murmur" []

• A low, indistinct, continuous sound: spoke in a murmur; the murmur of the waves. (noun)
• An indistinct, whispered, or confidential complaint; a mutter. (noun)
• Medicine An abnormal sound, usually emanating from the heart, that sometimes indicates a diseased condition. (noun)
• To make a low, continuous, indistinct sound or succession of sounds. (verb-intransitive)
• To complain in low mumbling tones; grumble. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "To ask for anything more, my darker fears murmur, is to tempt destruction."
• "There's a soft awestruck murmur from the back of the bus: "Wow!""
• "If your child's primary doctor thinks that the murmur is normal or innocent, he or she will note the murmur on the patient chart and listen again at later checkups for changes."