1. (n.) A mark indicating the height to which water has risen, or at which it has stood; the usual limit of high or low water.

2. (n.) A letter, device, or the like, wrought into paper during the process of manufacture.

3. (n.) See Water line.

Plimsoll line Plimsoll mark birthmark blaze blemish blotch brand caste mark check checkmark cicatrix cut dapple discoloration dot earmark engraving fleck flick freckle gash graving hack high-water mark jot lentigo load waterline macula mark marking mole mottle nevus nick notch patch point polka dot prick puncture scar scarification score scotch scratch scratching speck speckle splash splotch spot stain stigma strawberry mark tattoo tattoo mark tick tidemark tittle waterline