security
se.cu.ri.ty \si-'kyu.r-*t-e-\ n 1: the quality or state of being secure : as 1a: freedom from danger : SAFETY 1b: freedom from fear or anxiety 2a: something given, deposited, or pledged to make certain the fulfillment of an obligation 2b: SURETY 3: an evidence of debt or of property (as a stock certificate or bond) 4a: something that secures : PROTECTION 4b: measures taken esp. to guard against espionage or sabotage