The moment in time when you pass under a bridge during a rain storm and the rain temporarily stops, resulting in silence.
The raindrops ceased to fall noisily on Tom's windshield as he passed under a bridge during a rainstorm. "Ah, he thought to himself. Drylence."
The silence when you drive under a bridge during a hard rain. Dry and silent. Drylence.
The drylence under the bridge was so peaceful.