security

noun

1. (uncountable)The condition of not being threatened, especially physically, psychologically, emotionally, or financially.

   “Chad always carries a gun for his own security.”

   “The pink blanket gives little Mary lots of security.”

   “Give up yourself merely to chance and hazard, / From firm security.”

   “Was there no way to provide for the Safety of Britain, or the Security for its Trade, but by the French Kings turning his own Arms to beat his Grandſon out of Spain?”

2. (countable)Something that secures.
3. (countable, uncountable)An organization or department responsible for providing security by enforcing laws, rules, and regulations as well as maintaining order.

   “Pamela works in security.”

   “[…] Going through security I held her for so long / She finally looked at me in love and she was gone”

   “The threat of terrorism to the British lies in the overreaction to it of British governments. Each one in turn clicks up the ratchet of surveillance, intrusion and security. Each one diminishes liberty.”

   “From the ground, Colombo’s port does not look like much. Those entering it are greeted by wire fences, walls dating back to colonial times and security posts. For mariners leaving the port after lonely nights on the high seas, the delights of the B52 Night Club and Stallion Pub lie a stumble away.”

4. (countable, uncountable)Something that secures the fulfillment of an obligation or law.
5. (countable, uncountable)Freedom from apprehension.
6. (countable, in-plural, often, uncountable)A tradeable financial asset, such as a share of stock or any of various classes of bond.ᵂ
7. (countable, uncountable)Proof of ownership of stocks, bonds or other investment instruments.
8. (countable, uncountable)Property etc. temporarily relinquished to guarantee repayment of a loan.

   “Near-synonym: collateral”

9. (countable, uncountable)A guarantee.

   “As to Perſons of Quality, they give Security to appropriate a certain Sum for each Child, ſuitable to their Condition; and theſe Funds are always managed with good Husbandry and the moſt exact Juſtice.”

   “Those who lent him money lent it on no security but his bare word.”

10. (countable, obsolete, uncountable)Carelessness; negligence.

    “He means, my lord, that we are too remiss, Whilst Bolingbroke, through our security, Grows strong and great in substance and in power.”