扉・闔|とびらtobira[0]heiban (flat)

1. noundoor; gate; opening
   その扉とびらは永久えいきゅうに閉とざされた。↗

   The door was closed for good.
2. nountitle page

• Synonym戸とNeutralA door, especially a Japanese sliding door or shutter (「戸を閉める」); 「扉」 usually means a hinged door and can also mean a title page.
• Synonym門もんNeutralThe same word 「戸」 as above, here covering doors and windows as in 「戸締まり」; 「扉」 usually means a hinged door.
• Synonym門戸もんこNeutralA gate or door, often used figuratively for openness to the outside, as in 「門戸を開く」.
• SynonymドアNeutralA loanword for door (「ドアを開ける」); the most common word in everyday speech, usually for Western-style doors.
• Related入り口いりぐちNeutralAn entrance (「駅の入り口」); the emphasis is on the place where you enter.
• Related玄関げんかんNeutralThe entryway of a home (「玄関で靴を脱ぐ」); the front-entrance area of a house.
• RelatedひらきNeutralOpening; appears in compounds like 「観音開き」 for ways doors open; not itself a word for a door.
• Related戸口とぐちNeutralA doorway (「戸口に立つ」); the emphasis is on the spot where people come and go.
• Related門口かどぐちNeutralThe front gate or doorway (「門口に立つ」); has an old-fashioned flavor.
• Related枢とぼそWrittenWritten/formal prose for a door pivot or a door; rare, seen mostly in classical texts.
• Relatedとば口とばくちCasualAn entrance or a beginning (「人生のとば口」); colloquial.

Use 「扉」 for a hinged door, also figuratively for a door to a new world or a book's title page (「扉を開く」「未来への扉」). In everyday speech 「ドア」 is the default; 「戸」 fits Japanese-style doors and shutters, 「入り口」 an entrance. Others: 「玄関」 the home entryway, 「戸口」 the doorway, 「門口」 the gate front, 「門戸」 figurative openness, 「開き」 a way of opening, 「枢」 literary, 「とば口」 colloquial.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （とびら）片方かたほうを蝶ちょうつがいなどで固定こていして、それを軸じくに回転かいてんさせることにより開け閉あけしめを行おこなう戸と。