The term 'gunpowder holder' can be broken down into three separate words: HORN (4 letters), KEG (3 letters), and Teabag (6 letters). A HORN is a curved, hollowed-out animal HORN that was used to store gunpowder in the past. A KEG is a cylindrical container made of metal or wood, which was also used to store gunpowder. Finally, a teabag is a small bag made of cloth or paper, which was filled with gunpowder and then sealed. All three of these items were used to store gunpowder in the past, and together they form the term 'gunpowder holder'.