security
US /səˈkjʊr.ə.t̬i/
UK /səˈkjʊr.ə.t̬i/
1.
the state of being free from danger or threat
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The new alarm system provides enhanced security for the building.
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Personal security is a major concern for travelers in some regions.
2.
a private or public organization responsible for providing protection and safety
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Airport security checked all passengers before boarding.
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He works for a private security firm.
3.
financial assets held by a lender as collateral for a loan
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The bank required additional security for the large business loan.
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Investors often look for high-quality securities.