to blockade; to seal off; to lock down

door lock

to lock; to be locked

to interlock; to be linked; chain (store etc)

stocks and chain; in fetters

to unlock

to unlock; to release

locked in (with the door locked from the outside)

locked in (with the door locked from the outside)

zipper

padlock

bolt-action lock (sliding bolt mechanism, surface or mortise-mounted)

lock

to pick a lock; to force a lock

exposed lock; external lock (e.g. padlock or surface-mounted latch) (contrasted with 暗鎖|暗锁[an4 suo3] "built-in lock")

built-in lock; concealed lock (flush with the surface, with only the keyhole visible) (contrasted with 明鎖|明锁[ming2 suo3] "exposed lock")

deadlock (computing)

locked up; closed off; (of one's brow) furrowed; frowning

(of a gate, vehicle etc) to lock; to engage the lock

fetter lock (to restrain horse); handcuff lock

to lock

fogbound; enshrouded in mist

combination lock

pin tumbler lock; spring lock

spring lock

magnetic lock

combination lock

(idiom) the shackles of fame and fortune

One key opens one lock.; There is a different solution for each problem. (idiom)