B1
a container made of wire or metal bars used for keeping birds or animals
Dictionary examples:
The lion's cage at the zoo has a 'Do Not Disturb' sign. (0.0)
The monkey escaped its cage and stole the zookeeper's banana sandwich! (0.0)
My pet snake's cage has a tiny 'No Mice Allowed' sign. (0.0)
It took about 10 minutes to get the mouse into her cage. (24.2)