Rustling silk is a term used to describe the sound of fabric being moved or shifted. It is often used to describe the sound of a dress or other garment being worn. The term rustling silk is derived from the verb 'RUSTLE, ' which means to make a soft, crackling sound. Rustling silk is often associated with elegance and luxury, as it is often heard in high-end fashion shows or when someone is wearing an expensive garment.