watermark Syllabification: (wa·ter·mark)Pronunciation: /ˈwôtərˌmärk, ˈwä-/Translate watermark | into French | into German | into Italian | into Spanish Definition of watermark noun a faint design made in some paper during manufacture, which is visible when held against the light and typically identifies the maker. verb [with object] mark with a watermark. watermark in other Oxford dictionaries Definition of watermark in the British & World English dictionary