noun
push-up door; roll-up shutter
A door or shutter that opens by lifting or rolling upward, such as a garage door or traditional storefront shutter.
店の前の揚げ戸を開けると、朝日が差し込んだ。
When I opened the roll-up shutter in front of the shop, the morning sun streamed in.
古い蔵には重い揚げ戸がついている。
The old storehouse has a heavy push-up door.
A more common modern term for roll-up shutters, often made of metal. 揚げ戸 can refer to traditional wooden lift-up doors as well.
Compound of 揚げ (age, 'lifting') + 戸 (to, 'door'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.