A lock that cannot be picked by ordinary means. / (firearms) A lock with some device for preventing accidental firing of the weapon.

A device, fitted with a lock, that is used to immobilise a bicycle when not in use

plural of seat lock

(railways) The lock of a reversible seat in railroad cars.

simple past tense and past participle of tick a lock

Third-person singular simple present indicative form of tick a lock

present participle of tick a lock

To keep quiet or keep a secret.

A lock that fastens by means of a spring.

plural of spring lock