Moire Watermarked Watered Silk
All of the above could refer to the same fabric, though the last is fiber specific.
Fabric which has a wavy surface apearance as if it were watermarked. Each fabric must be treated somewhat differently to achieve the effect, but the final effect is what the name refers to. Water is seldom involved, and calendering is usually what is used to achieve the look. Whereas wool will come out with a flat glazed appearance when this is done, silk and several other fibers (the other fiber fabrics often being corded or heavily slubbed to enhance the result) will crush differently and give the watermarked look. The fabric is often starched or otherwise sized to maintain the resulting pattern.