barrier

Definition

• n. a structure or object that impedes free movement
• n. any condition that makes it difficult to make progress or to achieve an objective
• n. anything serving to maintain separation by obstructing vision or access

Word forms

Plural

barriers

Example sentences

1. n.

   The fence acted as a barrier to keep the animals inside the farm.

2. 化

   The barrier in the chemical reaction prevented the two substances from mixing.