the state of being free from danger or threat.
the system is designed to provide maximum security against toxic spills
a private police force that guards a building, campus, park, etc..
The police force, private security and volunteers were present in large numbers to check any untoward incident.
a thing deposited or pledged as a guarantee of the fulfillment of an undertaking or the repayment of a loan, to be forfeited in case of default.
The money was being used as security for costs until the appeal was completed.
a certificate attesting credit, the ownership of stocks or bonds, or the right to ownership connected with tradable derivatives.
The new rules also make donating mutual funds, stocks, bonds and other securities more attractive.