door chain

noun

1. a short chain with a removable slide fitting that can be attached between the inside of a door and the doorjamb to prevent the door from being opened more than a few inches without the chain being removed.

Word History and Origins

Origin of door chain¹

First recorded in 1830–40

Example Sentences

There are also two sliding tracks, which JerryRigEverything notes works almost like a door chain lock to keep everything in place when sliding the phone open and closed.

From The Verge

But when Gary, a little person, hurries to get out, he can’t reach the door chain and must ask Arthur for help.

From Los Angeles Times

The door chain only allowed a few inches between the postman and me.

From Literature

Finally the door chain rattles as someone locks it.

From Literature

I'd put on the door chain 'cause Dad says not even Black Swan Green's safe from perverts and maniacs.

From Literature