Crux means the main or most important part. It shows what is really important in a question or problem. People use it when they want to focus on the key point.
The crux of the story is about trust.
We found the crux of the problem fast.
Crux can mean the hardest or most difficult part of something. It is the part that people find confusing or hard to solve. It is often used for puzzles or problems.
The crux of the puzzle is very hard.
This clue is the crux of the mystery.
In climbing, the crux is the hardest part of the route. Climbers must be careful because it needs the most skill and strength to pass it.
The crux of the climb needs great skill.
You must pass the crux to finish.
Crux can mean a climbing plant with small leaves. This use is less common but still found in some places. The plant climbs on walls or trees.
The crux grows on the old wall.
She picked a leaf from the crux plant.
In writing or speaking, crux means the main idea or important part. It helps people understand the whole message or argument very well.
The essay’s crux is clear and strong.
Her speech reached the crux at the end.
