Security

1. An evidence of debt or of property, as a bond, a certificate of stock, etc.; as, government securities.
2. Hence, carelessness; negligence; heedlessness.
3. Freedom from apprehension, anxiety, or care; confidence of power of safety; hence, assurance; certainty.
4. One who becomes surety for another, or engages himself for the performance of another's obligation.
5. Freedom from risk; safety.
6. That which secures or makes safe; protection; guard; defense.
7. The condition or quality of being secure; secureness.
8. Something given, deposited, or pledged, to make certain the fulfillment of an obligation, the performance of a contract, the payment of a debt, or the like; surety; pledge.