everest
n. countablen. the highest point or the greatest challenge you can face. It comes from the name of the world's tallest mountain.
n. the highest point of achievement or the most formidable challenge in a particular field. Often used metaphorically to describe an ultimate goal or peak performance.
Winning an Oscar is the Everest of a film career.
For many marathon runners, completing the Boston race is the Everest of their athletic journey.
The composer viewed his final symphony as his personal Everest, a monumental work that required every ounce of his creative energy to finish.
Mountain named after Sir George Everest. The surname may be from Norman French Devereux, meaning from Évreux.
From Everesting.
When used metaphorically, it is often preceded by the definite article 'the' and followed by 'of'.