Source : Webster's Revised Unabridged Dictionary (1913)

Safeguard \Safe"guard`\, n. [Safe = guard: cf. F. sauvegarde.]
   1. One who, or that which, defends or protects; defense;
      protection. --Shak.

            Thy sword, the safeguard of thy brother's throne.
                                                  --Granville.

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

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

Safeguard \Safe"guard`\, v. t.
   To guard; to protect. --Shak.

Source : WordNet®

safeguard
     n 1: a precautionary measure warding off impending danger or
          damage or injury etc.; "he put an ice pack on the injury
          as a precaution"; "an insurance policy is a good
          safeguard"; "we let our guard down" [syn: {precaution},
          {guard}]
     2: a document or escort providing safe passage through a region
        especially in time of war [syn: {safe-conduct}]
     v 1: make safe
     2: escort safely