master key
The term "master key" is used in various contexts, ranging from physical security to digital access and metaphorical applications.
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Definition
B2Physical Security
(common)A key that can open multiple locks, each of which also has its own unique key.
Example
- The janitor used the master key to access all the rooms in the building.
C1Digital Security
(technical)A top-level encryption key used to encrypt and decrypt other encryption keys or data.
Example
- The system administrator used a master key to secure the company's sensitive data.
C1Metaphorical
(figurative)A crucial principle or solution that provides access to understanding or resolving a complex issue.
Example
- Effective communication is often the master key to a successful relationship.
Similar
Terms that have similar or relatively close meanings to "master key":
key logskeleton keykey inkey intokey onkey offkey to the midwaywater key