Noun
a line marking the highest level reached
Source: WordNethigh water mark
Worshiping the Devil is no more insane than worshiping God... It is precisely at the moment when positivism is at its high-water mark that mysticism stirs into life and the follies of occultism begin. Joris-Karl Huysmans
The 2000s were the time when bromance became a kind of love that dared to speak its name. As a high-water mark of bro culture, nothing can ever top the MTV series 'Bromance,' with Brody Jenner and his search for a new BFF. Rob Sheffield
Civil War scholar Allan Nevins argues that 1862 was the strategic high-water mark of the Confederacy. Source: Internet
A Surrealist group developed in London and, according to Breton, their 1936 London International Surrealist Exhibition was a high-water mark of the period and became the model for international exhibitions. Source: Internet
All this represents a high-water mark in the influence of the “nativist lobby” — a richly funded assemblage of national and local groups organized by Michigan ophthalmologist John Tanton. Source: Internet
Alex Bowman finished third in Sunday's Gander Outdoors 400 at Pocono Raceway, a high-water mark in his Monster Energy NASCAR Cup Series career. Source: Internet