What does locking mean?
The word 'locking' means fastening or securing something with a lock, or engaging a mechanism so that it cannot move or operate. It is common in instructions and descriptions involving doors, vehicles, storage containers, machinery, and electronic systems: a device may be described as 'locking,' a mechanism may enter a 'locking position,' or an operator may be 'locking' a component into place. In other contexts, the word can describe movement that becomes fixed or obstructed, as when a wheel starts locking because of ice. Although it is formally the present participle of 'lock,' it is also widely treated as an adjective when placed directly before a noun. The term is practical and broadly neutral, ranging from everyday security to technical descriptions of mechanical and digital systems.
To secure something by operating a lock, or to engage a mechanism so that it cannot move or be operated.
"The driver locked the van and stored the key securely."
This is the present participle form of 'lock' and is also used as a gerund in constructions such as 'the locking of the gates.'
Serving to lock, secure, or engage a mechanism; designed to prevent movement or operation.
"The safety catch must be in the locking position before the machine starts."
This attributive use is especially common in technical, mechanical, and electronic contexts.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does locking come from?
The modern form 'locking' was created by adding the suffix '-ing' to the verb 'lock.' 'Lock' descends from Old English 'loc,' meaning a fastening or means of securing a door, and belongs to a Germanic word family that includes Dutch 'slot' and German 'Schloss.' The '-ing' form developed the standard meanings of an action in progress and a participial or adjectival use before a noun.
Related word forms
How locking is actually used
The form can function as the present participle of the verb, as in 'is locking,' and as an adjective before a noun, as in 'a locking device.' In attributive use, it usually describes a mechanism or its state rather than the act of securing something.
Easily confused with locking
A lock generally requires a key or combination for secure closure, whereas a latch fastens a door but may be opened without one.