| 1. | a low, continuous sound, as of a brook, the wind, or trees, or of low, indistinct voices. |
| 2. | a mumbled or private expression of discontent. |
| 3. | Also called heart murmur. Medicine/Medical.
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| 4. | Phonetics. a voice quality in which vibration of the vocal cords is accompanied by the escape of a great deal of air, as in the (h) of ahead; breathy voice. |
| 5. | to make a low or indistinct sound, esp. continuously. |
| 6. | to speak in a low tone or indistinctly. |
| 7. | to complain in a low tone or in private. |
| 8. | to sound by murmurs. |
| 9. | to utter in a low tone: He murmured a threat as he left the room. |

murmur mur·mur (mûr'mər)
n.
An abnormal sound heard on auscultation of the heart, lungs, or blood vessels.