noun
A door made of glass, often found in shops, offices, or modern homes. Compare with ガラス戸, which can refer more broadly to glass sliding doors or glass panels.
See also: ガラス戸
店のガラス扉を開けて中に入った。
I opened the shop's glass door and went inside.
ガラス扉越しに中の様子が見える。
You can see inside through the glass door.