high-water mark

== English == === Noun === high-water mark (plural high-water marks) (literal) A mark, such as a line of seaweed, showing the highest level reached by a body of water. Antonym: low-water mark Hypernyms: watermark, waterline (by extension, figurative) The peak, apex or acme of something; the maximum level; the furthest or highest point. Antonym: low-water mark ==== Related terms ==== ==== Translations ====