definition of
murmur

[1] #1 murmur v. speak softly or indistinctly; "She murmured softly to the baby in her arms". wn

[2] #2 murmur n. [mutter, muttering, murmuring, murmuration, mussitation] a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech. wn

[3] #3 murmur n. [murmur vowel] a schwa that is incidental to the pronunciation of a consonant. wn

[4] #4 murmur v. [mutter, grumble, croak, gnarl] make complaining remarks or noises under one's breath; "she grumbles when she feels overworked". wn

[5] #5 murmur n. [heart murmur, cardiac murmur] an abnormal sound of the heart; sometimes a sign of abnormal function of the heart valves. wn