security
nounUK /sɪˈkjʊərəti/
US /sɪˈkjʊrəti/
Security means keeping people and things safe from danger.
The airport has tight security to keep everyone safe.
OTHER MEANINGS
2. A feeling of being safe and free from worry.
She felt a sense of security when her parents were home.
3. Something you give to promise you will pay a loan or return something.
He left his watch as security for the borrowed money.
4. People whose job is to protect a place or event.
Security checked our bags at the concert.