noun
door latch; door catch
A device that prevents a door from opening fully, often used for security or child safety. Wasei-eigo from English 'door guard'.
wasei-eigo (Japanese-coined English), from door guard
ホテルの部屋にはドアガードが付いていた。
The hotel room had a door guard installed.
小さな子どもがいるので、玄関にドアガードを付けました。
Since we have a small child, we installed a door guard at the entrance.