柯林斯詞典gunpowder /?ɡ?n?pa?d?/ 1. N-UNCOUNT Gunpowder is an explosive substance that is used to make fireworks or cause explosions. 火藥 返回 gunpowder劍橋詞典an explosive mixture of substances in the form of a powder , used for making explosive devices and fireworks 火藥 返回 gunpowder