|1.||a fireproof wall or partition used to impede the progress of a fire, as from one room or compartment to another|
|2.||computing a computer system that isolates another computer from the internet in order to prevent unauthorized access|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
A means of separating a computer network from outside networks for security purposes. A server outside an organization's own network may be used to funnel all incoming and outgoing traffic to assist in keeping out viruses, as well as to prevent unauthorized outsiders from gaining access to a network.