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.
When I opened the roll-up shutter in front of the shop, the morning sun streamed in.
The old storehouse has a heavy push-up door.
Standard kanji spelling.
Variant spelling without okurigana.
Compound of 揚げ (age, 'lifting') + 戸 (to, 'door'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.