high water noun 3high-water adjective 1forms 3 noun3 •The location of high tide on a coastal area.So as not to impede navigation the two principal spans of the bridge were designed to provide a clear headway of 157 ft. above high water for a distance of 500 ft.; [...]. — 1941 •The state of the tide when the water is at its highest.One of the requirements of the design was the provision of a clear headway of 50 ft. at high water for shipping. — 1952 •The highest stage of a river. high-water adjective1 •Being or resembling highwaters, long pants with a noticeable gap between the hem and the top of the wearer's foot; hence, short.Their hair almost bounced, their braces flashed in the fluorescent light, and they had my sisters' permission to make comments about my “high-water” trousers. — 1992 formshigh waters · more high-water · most high-water