Others
- Guard (computer science), in programming language, an expression that directs program execution
- Guard (information security), a device for controlling communication between computer networks
- Guard (weapon), part of the handle of a sword designed to stop the user's hand from slipping onto the blade
- Guard dog, employed to watch for unwanted or unexpected animals or people
- Guard interval, intervals in transmission, used in telecommunications
- Abdominal guarding, in medicine, the tensing of the abdominal wall muscles to guard inflamed organs
- Mate guarding—guarding of a potential or former mate from other individuals
- A safety barrier to prevent people from falling into hazards such as into a fire or off a raised walking surface
- The aircraft emergency frequency, commonly referred to as "guard"
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