safety lock

noun

1. a lock designed to prevent picking.
2. safety ( def 4 ).

Word History and Origins

Origin of safety lock¹

First recorded in 1875–80

Example Sentences

In a way, made-to-measure is like the child safety lock on a car door.

From Los Angeles Times

To that end, Los Angeles County public health officials announced that the county is offering free gun safety locks to residents.

From Los Angeles Times

Goodson fell into his grandmother’s kitchen and his gun was found on the kitchen floor with the safety lock engaged, prosecutors said.

From Seattle Times

I sometimes found the system finicky when a wire didn’t stretch quite as long as I’d like to switch from one safety lock to the next, but the peace of mind was priceless.

From Seattle Times

What alarm system, safety locks or rules guard against a desperate child’s resourcefulness?

From New York Times