Murmuration \Mur`mur*a"tion\, n. [L. murmuratio.] The act of murmuring; a murmur. [Obs.] --Skelton.
murmuration n : a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech [syn: {mutter}, {muttering}, {murmur}, {murmuring}, {mussitation}]