lever lock
Definition
Noun: A type of lock mechanism where the internal components that secure the bolt are flat, pivoting pieces called levers. The correct key must lift each lever to a precise height, aligning a gate in each lever with a post on the bolt, allowing the bolt to be withdrawn and the lock to open.
Usage
A lever lock is a specific mechanical device used for security. - The old safe was secured by a heavy-duty lever lock. - Many high-security padlocks use a lever lock mechanism instead of a pin tumbler design.
Advanced Usage
- Lever locks are often graded by the number of levers they contain (e.g., a 5-lever lock), with more levers generally indicating higher security.
- The term can be used attributively (functioning as an adjective) to describe other nouns related to this mechanism.
- The lever lock mechanism is known for its reliability.
Variants and Related Words
- Lever tumbler lock: A more technical synonym for lever lock.
- Deadlock: A type of lock that can be a lever lock, where the bolt is moved directly by the key without a spring action.
- Mortice lock (or Mortise lock): A lock fitted into a recess (mortise) in a door edge; it often contains a lever lock mechanism.
Synonyms
- Lever tumbler lock
- Mechanical lever lock
Antonyms
- Pin tumbler lock (a lock whose internal components are pins rather than levers)
- Electronic lock
- Combination lock
Related Phrases
- To pick a lever lock: The act of manipulating the levers with tools to open the lock without the correct key.
- Picking a lever lock requires feeling for the alignment of each lever's gate.
- Lever lock security rating: A classification system for the resistance of a lever lock to forced entry.
Noun
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a lock whose tumblers are levers that must be raised to a given position so that the bolt can move
