stovepipe
noun
1. chimney consisting of a metal pipe of large diameter that is used to connect a stove to a flue
Definition categories: man–made, chimney
2. a man's hat with a tall crown; usually covered with silk or with beaver fur
verb
1. To collect or store (information) in a compartmentalized manner, so that some parties who might be interested in its use or be able to utilize it are restricted from accessing it.