Usage patterns
〈動物〉を檻に入れるto put an animal in a cage
The keeper put the lion in the cage.
檻から出るto get out of a cage/cell
The monkey got out of its cage and ran off.
檻の中に閉じ込めるto lock someone/something up inside a cage
The prisoner was locked up in the cell.
檻を破るto break out of a cage
The bear broke out of its cage and fled into the forest.
Expressions
象の檻elephant cage; Wullenweber antenna