barrier
//ˈbæriər//
Noun
barrierSingular
barriersPlural
1
A physical structure that blocks or prevents movement or access from one place to another.
The police put up barriers to control the crowd.
2
An obstacle or circumstance that prevents progress, communication, or understanding.
Language can be a barrier to communication.
3
A limit or boundary that separates or restricts something.
The river forms a natural barrier between the two countries.