Meaning of SECURITY in English

noun (plural -ties) Date: 15th century the quality or state of being secure: as, freedom from danger ; safety , freedom from fear or anxiety, freedom from the prospect of being laid off , 2. something given, deposited, or pledged to make certain the fulfillment of an obligation, surety , an instrument of investment in the form of a document (as a stock certificate or bond) providing evidence of its ownership, 4. something that secures ; protection , b. measures taken to guard against espionage or sabotage, crime, attack, or escape, an organization or department whose task is ~

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.