Word forms: (regular plural) door chains
noun (Hospitality (hotel): Hotel room, bedroom) A door chain is a small chain, attached to the inside of a door, which you can attach to the frame of the door to cover the opening for extra security. ⇒ Use the door chain when opening your door. ⇒ When they went to bed they put the door chain across the room door. ⇒ The door chain allows you to open your door part way while it stays secure.
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