noun
wooden door; wooden shutter
A door or shutter made of wooden boards, often found in traditional Japanese architecture.
古い家の板戸を開けると、庭が見えた。
When I opened the wooden door of the old house, I could see the garden.
Compound of 板 (ita, 'board') and 戸 (to, 'door'), with rendaku voicing of と to ど.