security

/sɪˈkjʊrəti/
noun
  1. The state of being free from danger, threat, or harm; safety.
    • National security is a top priority for the government.
    • The family installed cameras for home security.
    • She felt a sense of security after locking the door.
  2. Measures taken to protect a person, place, or thing from crime, attack, or unauthorized access.
    • The airport tightened security after the threat.
    • He works in security at the mall.
    • Security checked everyone's bags at the entrance.
  3. A financial asset, such as a stock or bond, that can be traded.
    • She bought government securities as a safe investment.
    • Investors traded securities on the stock exchange.
    • The company issued new securities to raise money.
  4. Something given as a guarantee of repayment of a loan; collateral.
    • The bank accepted the house as security for the loan.
    • Without security, the lender refused to give credit.
    • He used his car as security to borrow money.
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