Meaning & use
Lock
Last updated
A mechanical device used to fasten a door, container, or vehicle so that it can only be opened with a key, code, or similar means.
See it in a sentence
He turned the key in the lock and pushed the door open.
Make sure to check the lock before you leave the house.
A note on using this word
"Lock" also names a section of a canal enclosed by gates, used to raise or lower boats between different water levels.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. verb
To fasten something with a lock so that it cannot be opened.
Remember to lock the car before you walk away.
3. noun
A section of a canal or waterway closed off by gates, used to raise or lower boats between different levels.
The barge waited for the lock to fill before continuing upstream.
Make it your own
Write a sentence using “Lock”, then compare your use with the examples above.