"Hum," remarked Uncle Peter, in a tone to be noticed for its extreme dryness.
He heard the hum and clang of an electric car off through a chestnut grove.
I don't quite think myself a lady-killer: by George, my—hum!
The Sunday landscape was very still, save for the hum of busy insect life.
The bystanders did, and a hum of curiosity circled round; who could they be?