This is the 10514th most frequent German word.
rauscher
"Rauscher" refers to a "rusher" or someone/thing in a rushing motion, but it can also mean "a person who causes noise/roaring" in a figurative or archaic sense.
Here, 'Rauscher' is used nominally to describe a soft sound reminiscent of flowing water.
Der sanfte Rauscher des Bachs klang beruhigend.
The gentle murmur of the brook sounded soothing.
In this case, 'Rauscher' refers to a sudden noise or movement, emphasizing its descriptive nature.
Ein plötzlicher Rauscher im Raum ließ uns alle verstummen.
A sudden rustle in the room made us all fall silent.
Here, 'Rauscher' is metaphorically employed to describe a dynamic and colorful visual effect.