Barrier
Of mechanism.
Anything serving to maintain separation by obstructing vision or access.
This concept's ID is @1~48854
Contains
- bar
A submerged (or partly submerged) ridge in a river or along a shore; "the boat ran aground on...
- blood-brain barrier
A mechanism that creates a barrier between brain tissues and circulating blood;...
- curtain
Any barrier to communication or vision; "a curtain of secrecy"; "a curtain of trees".