Synonyms for "watermark" in English

– a distinguishing mark impressed on paper during manufacture; visible when paper is held up to the light ¹

– a line marking the level reached by a body of water ¹

– An image that appears as the background to a document. Generally faded and transparent, so that text can be clearly read over it. ²

– A threshold used to manage the memory consumption on each cache host. The high watermark and low watermark specify when objects are evicted out of memory. ²