murmur

1. noun /ˈmɜː(ɹ)ˌmə(ɹ)/

a) (countable) Low or indistinct sounds or speech.

In the prison of the tween decks reigned a darkness pregnant with murmurs. The sentry at the entrance to the hatchway was supposed to "prevent the prisoners from making a noise," but he put a very liberal interpretation upon the clause, and so long as the prisoners refrained from shouting, yelling, and fightingeccentricities in which they sometimes indulgedhe did not disturb them.

b) The sound made by any condition which produces noisy, or turbulent, flow of blood through the heart.

A murmur arose from the audience.

2. verb /ˈmɜː(ɹ)ˌmə(ɹ)/

a) To grumble; to complain in a low, muttering voice, or express discontent or someone or something.

The iewes murmured att itt, because he sayde: I am thatt breed which is come doune from heven.

b) To speak or make low, indistinguishable noise; to mumble, mutter.

I couldnt hear the words; he just murmured a lot.