safeguard

safeguard is a   Noun

Definition:

[1] One who, or that which, defends or protects; defense; protection. Shak. Thy sword, the safeguard of thy brother`s throne. Granwille.

[2] A convoy or guard to protect a traveler or property.

[3] A pass; a passport; a safe-conduct. Shak.

Synonyms: