noun
lockbox
noun
1
A small, lockable box used to store valuables or keys securely.
"They kept spare keys in a lockbox by the garage."
How to Use Lockbox
Learner’s notesIn plain EnglishA portable box with a built-in lock, often used to secure keys, cash, or documents.
Word Forms
lockboxes plural
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They kept spare keys in a _____ by the garage.
Etymology
A compound of lock + box.