CAGE

noun

1. An enclosure made of bars, normally to hold animals.
2. The passenger compartment of a lift.
3. (water polo) The goal.

verb

1. To confine in a cage; to put into and keep in a cage.
2. To restrict someone's movement or creativity.
3. To track individual responses to direct mail, either to maintain and develop mailing lists or to identify people who are not eligible to vote because they do not reside at the registered addresses.