| 单词 | security |
| 释义 | security security /; AmE / noun (plural securities)
CONVERTIBLE SECURITY, DATED SECURITY, EMPLOYMENT SECURITY, FIXED-INTEREST SECURITY, GOVERNMENT SECURITY, JOB SECURITY, MARKETABLE SECURITY, MORTGAGE-BACKED SECURITY, SOCIAL SECURITY
1 [U] the activities involved in protecting a country, building or person against attack, danger, etc: airport/hotel security There will be round-the-clock security at the factory. They carried out security checks at the airport. The thief was caught (= filmed) on a security video.
❖ lax/strict/tight security ◆ to improve/strengthen/tighten security ◆ a security alert/check/system
2 [U with sing./pl. verb] the department of a large company or organization that deals with the protection of its buildings, equipment and staff: Security was/were called to the incident. the head of security
3 [U] protection against sth bad that might happen in the future: financial security Which type of investment offers the greatest security?
❖ economic/financial security ◆ to give (sb)/have/offer (sb)/provide (sb with) security
4 (Finance ; Stock Exchange ) securities [pl.] a financial asset such as a share or bond; the certificate that shows you own this: to buy high-yield securities Merrill Lynch is one of the world's biggest securities firms. the change from paper to electronic securities
❖ to buy/hold/sell securities ◆ to deal in/issue securities ◆ a securities business/company/dealer/firm/house
5 (Finance ; Law ) [U,C] a valuable item that you agree to give to sb if you are unable to pay back the money that you have borrowed from them: His home and business are being held as security for the loan. Shares in the company were pledged as security against the loan. ⇨ COLLATERAL
❖ to give/offer/pledge sth as security |
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