A door (especially in Japanese-style houses); a doorway or sliding door such as shoji or fusuma.
古い家には障子と襖などの戸が使われている。
Old houses use doors like shoji and fusuma.
戸を閉めてください。
Please close the door.
台所の戸がきしんでうるさい。
The kitchen door squeaks and is noisy.
A shutter or window shutter; a panel used to close an opening like a window or door.
台風が来るので雨戸を閉めた。
We closed the shutters because a typhoon was coming.
冬は戸を閉めて部屋を暖かくする。
In winter we close the shutters/doors to keep the room warm.
古い家には戸がしっかり備え付けられていることが多い。
Old houses often have sturdy shutters/doors installed.
Archaic: the entrance or gate of a house; seen in classical or literary usage.
古い詩では「家の戸」とは家の入り口を指すことが多い。
In old poetry, 'ie no to' often refers to the entrance of a house.
彼は家の戸をくぐって故郷へ帰った。
He passed through the gate of the house and returned to his hometown.
Archaic: a 'narrows'—a narrow passage or constricted area (used in older texts for geographical features).
その谷の戸は狭く、進軍が難しかった。
The narrows of that valley were tight, making the advance difficult.