master key

Noun

A key that can open multiple locks, typically used by maintenance personnel or building managers.

ریشه

Compound word combining 'master' and 'key'.

مثال

• The janitor carries a master key to access all the rooms in the building.
• The master key is kept securely in the manager's office.
• The locksmith can create a master key that works for all the locks in the house.

ترکیب‌های رایج

Carry a master key Keep the master key securely Create a master key Use the master key system