The phrase "put under lock and key" is an idiomatic expression that typically refers to the act of securely storing or safeguarding something, usually valuable or important, by locking it away. This expression suggests a strong level of security and protection, emphasizing the need to keep the item inaccessible to others.
The term "lock and key" directly relates to the means of safeguarding. A "lock" is a device designed to fasten or secure an object, typically requiring a specific key or mechanism to unlock it. By extension, "key" symbolizes access or control over the lock, as it is the instrument needed to unlock and gain access to what is secured.
When someone or something is "put under lock and key," it implies that the matter is being stored in a place that is securely locked and inaccessible to unauthorized individuals. This could be a physical location, such as a safe, vault, or cabinet, or it could be a metaphorical concept, like protecting sensitive information or keeping someone in confinement.
The expression conveys a sense of utmost security, emphasizing the importance of ensuring the safety and protection of whatever is being locked away. It signifies a deliberate act of safeguarding, highlighting the intention to prevent unwanted access, theft, or tampering. Whether applied to physical objects, documents, or individuals, "put under lock and key" implies a high level of precaution and restricted access, ensuring that the item or person remains securely protected.
