What is "rivering"

Usage examples of "rivering".

But a dark knowledge was rivering just beyond his mindreach, too slow and vast to be accessible, like the unknowing that tells itself through our lives.

Joanna shifted the heavy grip of the weapon on her shoulder, goose-flesh sandpapering her arms and sweat rivering down her cheeks and sides.

We lodged in a hostel in the city's upland half, and here, perched on the mountain's very flanks, I fancied I felt the faintest tremoring through the floor underfoot, and almost heard the sleepless giants rivering through the mountain-bone.