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Definition of Master key
1. Noun. Key that secures entrance everywhere.
Exact synonyms: Master, Passe-partout, Passkey
Generic synonyms: Key
Specialized synonyms: Skeleton Key
Generic synonyms: Key
Specialized synonyms: Skeleton Key
Definition of Master key
1. Noun. A key designed to open a set of several locks; a passkey ¹
¹ Source: wiktionary.com