safeguard

Plural: safeguards

Noun

• a precautionary measure warding off impending danger or damage or injury etc.
  • "an insurance policy is a good safeguard"
• a document or escort providing safe passage through a region especially in time of war
• Something that serves as a guard or protection; a defense.
• One who, or that which, defends or protects; defence; protection.
• A safe-conduct or passport, especially in time of war.
• The monitor lizard.

Verb

• make safe
• escort safely
• To protect, to keep safe.
• To implement safeguarding.
• To escort safely.

Examples

• Getting a flu shot is a good safeguard against illness.
• She kept a savings to safeguard against debt and emergencies.

Synonyms

guard, precaution, safe-conduct