Synonyms: security, security measure, security system
Definition: an electrical device that sets off an alarm when someone tries to break in
Similar words: electrical device
Definition: a device that produces or is powered by electricity
Synonyms: security system
Definition: (computing) a system that enforces boundaries between computer networks
Similar words: system
Definition: instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity
Usage: he bought a new stereo system; the system consists of a motor and a small computer