vision panel

A small window in a door which allows people to look through without opening the door.

Japanese Meaning

ドアに設けられた、開けずに外を見るための小さな窓

She peered through the vision panel to make sure no one was coming down the hallway.

彼女は廊下に誰も来ていないか確認するため、ドアの覗き窓を覗き込んだ。

Sense（1）

A small window in a door which allows people to look through without opening the door.

vision panels

（ plural ）