watermark

/ˈwɔtərˌmɑrk/
verb
  1. To mark (paper, an image, or a document) with a watermark.
    • The printer can watermark each page with a confidential stamp.
    • She watermarked her photos before posting them online.
    • The company watermarks all its official documents to prevent forgery.
noun
  1. A faint design or image in paper that is visible when held up to light, used to show authenticity or quality.
    • The banknote had a watermark of the president's face to prevent counterfeiting.
    • High-quality stationery often includes a subtle watermark.
    • She held the certificate up to the light to see the watermark.
  2. A digital mark embedded in an image, video, or document to identify the owner or protect copyright.
    • You can see the company logo as a watermark on the video.
    • The photographer added a watermark to her online portfolio to protect her work.
    • Removing a watermark from an image without permission is illegal.
  3. A line or mark indicating the level reached by water, especially in a river or tank.
    • They painted a watermark on the wall to record the highest tide.
    • The old well had a watermark from years of use.
    • The high watermark on the bridge showed how deep the flood had been.
What does "watermark" mean? | whatsthatwordmean | whatsthatwordmean