Security Systems Glossary

noun a small piece of shaped metal with incisions cut to fit the wards of a particular lock, which is inserted into a lock and turned to open or close it

verb to provide a lock with a key to operate it

adjective of crucial importance; central or essential

• The key to success is hard work and dedication.
• The key to acing the exam is studying the practice questions.
• The key to throwing a great party is having good vibes and good music.
• Communication is the key that unlocks the door to understanding in any relationship.

noun a device operated by a key, combination, or keycard and used to secure a door, gate, or container

verb to fasten or secure with a lock

adjective relating to something that is securely fastened or closed with a lock

preposition used in phrases like 'lock in' or 'lock up' to indicate securing or confining something

• Please remember to lock the door before leaving the office.
• Hey, don't forget to lock up when you're done.
• Make sure you lock that bad boy tight!
• She felt like her heart was under lock and key, guarded from any potential hurt.