Botnet (Def 1)
Computer Science
A number of Internet-connected devices, each of which is running one or more bots.
Botnet (Def 2)
Hacking
A number of Internet-connected devices, each of which is running one or more bots
Botnet (Def 3)
Intlmil
A collection of zombie PCs [personal computers]. Botnet is short for robot network. A botnet can consist of tens or even hundreds of thousands of zombie computers. A single PC in a botnet can automatically send thousands of spam messages per day. The most common spam messages come from zombie computers. (McAfee Labs - Threat Glossary) Also see zombie.; also, Botnets, or Bot Networks, are made up of vast numbers of compromised computers that have been infected with malicious code, and can be remotely-controlled through commands sent via the