trapdoor in Finnish
trapdoor in Finnish
luukku
A hinged or sliding door set into a floor or ceiling.
lattialuukku
A hinged or sliding door set into a floor or ceiling.
takaportti
(computing) A secret method of obtaining access to a program or online system; a backdoor.
luukku
(mining) A door in a level for regulating the ventilating current; a weather door.