柯林斯詞典watermark /?w??t??mɑ?k/ (watermarks) 1. N-COUNT A watermark is a design that is put into paper when it is made, and that you can only see if you hold the paper up to the light. Paper money often has a watermark, to make it harder to copy illegally. 水印; 常用於鈔票上以防偽→see also high-water mark 返回 water mark