| 封锁 | fēng suǒ | to blockade; to seal off | |
| 连锁 | lián suǒ | to interlock; to be linked; chain (store etc) | |
| 连锁店 | lián suǒ diàn | chain store | |
| 锁定 | suǒ dìng | to lock (a door); to close with a latch; to lock into place; a lock; a latch; to lock a computer file (to prevent it being overwritten); to lock (denying access to a computer system or device or files, e.g. by password-protection); to focus attention on; to target | |
| 门锁 | mén suǒ | door lock |
| 1 | I often forget to lock the door. | |
| 2 | Your account has been temporarily locked. | |
| 3 | He is the CEO of this hotel chain. | |
| 4 | The key to this lock is lost. Do you have a spare? | |
| 5 | She turned the doorknob hard, but found that the door was already locked. |
