[se.cu.ri.ty] n, pl -ties (15c) 1: the quality or state of being secure: as a: freedom from danger: safety b: freedom from fear or anxiety c: freedom from the prospect of being laid off "job ~"
2. a: something given, deposited, or pledged to make certain the fulfillment of an obligation b: surety
3: an evidence of debt or of ownership (as a stock certificate or bond)
4. a: something that secures: protection b (1): measures taken to guard against espionage or sabotage, crime, attack, or escape (2): an organization or department whose task is security