SAFEGUARD

safeguard. Safeguard, n. a defense, convoy, passport; v.t. to guard

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Safe″guard′ (?), n. [[Safe = guard: cf. F. sauvegarde.]] 1. 1. One who, or that which, defends or protects; defense; protection. Shak.
Thy sword, the safeguard of thy brother's throne. Granville. 2. 2. A convoy or guard to protect a traveler or property.
3. 3. A pass; a passport; a safe-conduct. Shak.