Rumbling (noun)

A low, heavy, continuous sound or noise, especially one made by a distant object or group of objects.

Origin:

Late 16th century: perhaps from middle dutch gerommel 'a rolling, thunder', of imitative origin.

Examples:

1. The rumbling of the thunder could be heard in the distance.
2. The rumbling of the engines was a sign that the airplane was taking off.
3. The rumbling of the stomach was a sign that the person was hungry.
4. The rumbling of the earthquake shook the buildings and caused damage.
5. The rumbling of the trucks on the road was loud and continuous.