trapdoor; flap door
A door that opens by flipping upward, often hinged at the top or bottom; used for attic access, cellar entrances, or small service hatches.
To go up to the attic, push up the trapdoor in the ceiling.
There is a trapdoor in the floor that leads down to the basement.
Loanword from English 'trapdoor'; often used in gaming or Western contexts, while 跳ね上げ戸 is the native architectural term.
Skylight or roof window; a fixed or opening window on the roof, not a door for passage.
Standard kanji spelling using 跳ね上げ (to flip up) + 戸 (door).
Variant using 撥ね上げ; 撥 can also mean 'to flip' but is less common for this word.
Compound of 跳ね上げ (はねあげ, 'flipping up') + 戸 (ど, 'door'). The spelling 撥ね上げ戸 uses a variant kanji for the same verb.