murmuring

Etymology

verb

1. present participle and gerund of murmur
   Iron and coal were the magnets that drew railways to this land of lovely valleys and silent mountains—for such it was a century-and-a-half ago, before man blackened the valleys with the smokes of his forges, scarred the green hills with his shafts and waste-heaps, and drove the salmon from the quiet Rhondda and the murmuring Taff. 1939 September, D. S. Barrie, “The Railways of South Wales”, in Railway Magazine, page 157

noun

1. A sound that murmurs.
   the murmurings of trees in the wind
2. A complaint against something.
   When Mrs. Churchill's orders were made known, they caused many secret marvellings and murmurings. 1796, Maria Edgeworth, The Parent's Assistant