(cricket) the central, rectangular area of the pitch onto which the bowlers may not run during their follow through

professionally trained bodyguards.

self-defence

(organic chemistry) Any chemical entity that is temporarily reacted with a functional group so as to protect it from a subsequent reaction

A software or hardware mechanism designed to prevent copying.

Safe sex.

(construction) A sacrificial material used to shield a waterproofing material from damaging external forces.

(computing) An operational mode of x86-compatible CPUs, in which software can use features such as virtual memory, paging, and safe multitasking.

The practice of protecting the natural environment by individuals, organizations and governments.

A government program that provides new identities and protection for witnesses who come forward and testify in court against dangerous targets.