trapdoornounmasculine/aɫ.kɐˈpɐ̃w̃/mediumal·ça·pãoPortuguesEnglishEspanolFrancaisDefinitionA hinged door or flap, usually in a floor or ceiling, providing access to a space below or above.They escaped through a trapdoor in the cellar.The stage trapdoor allowed for a dramatic entrance.syntrapdoorhatchEtymologyDo árabe 'al-qabw'.