This is the 15241st most frequent Russian word.
порох
Gunpowder.
Here, "порох" refers to gunpowder, a substance used in firearms and fireworks.
У пороха была неприятная сырость, поэтому он перестал гореть.
The gunpowder was unpleasantly damp, so it stopped burning.
In this metaphorical use, "порох" represents perseverance, determination, or spiritedness.
Его поступки показали, что в его сердце есть порох.
His actions showed that there is spirit in his heart.
Here, "порох" is used colloquially to signify energy, vigor, or potential.