[uncountable]things that are done to keep a person, building, or country safe from danger or crimeCOLLOCATIONS COLLOCATIONS strict/tight security (=careful security) lax security (=security that is not careful enough) national/state security (=the security of a country against its enemies) tighten security (=make security better) breach of security (=when something dangerous happens, in spite of security measures) for security reasons the security services/forces (=the police, army etc) security camera security check security measures/arrangements maximum security prison/jail
WORD FOCUS: airport WORD FOCUS: airport what you do at the airport:When you arrive at the airport, you go into the terminalbuilding. You check in for your flight at thecheck-in desk. You show your passport at passport controland then go through security, where they check that you are not carrying any weapons. If you have time you can wait for your flight in the departure lounge. When your flight is called, you go through the departure gatein order to get onto the plane. The plane then takes off from the runway. After your plane has landed, you go to the baggage reclaim to collect your bags, then go throughcustomsandimmigration, where they check your passport and your bags. You then go out into the arrivalsarea. ➔ See alsoairport
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.