barrier
nounUK /ˈbæriə/
US /ˈbæriər/
A barrier is something that stops you from going somewhere or doing something.
The fence acts as a barrier to keep the sheep in the field.
OTHER MEANINGS
2. Something that makes it hard for people to understand each other or work together.
Language can be a barrier when you travel to a new country.
3. A natural object like a reef or sandbar that blocks the way.
The boat carefully avoided the barrier near the shore.
4. A rule or condition that stops someone from doing something.
The high cost of tickets was a barrier for many families.