v .
the central point ; the essence 중심점, 급소 ; 본질

• The crux of an argument is the crucial part of it.
• Very often when you see this word, it will be followed by of the matter. The crux of the matter is the heart of the matter.
• Building a lot of atom bombs and dropping them on the capital was the crux of the renegade general's plan to topple the existing government.