Definitions
There are 2 meanings of the phrase
Powder Keg.
Powder Keg - as a noun
A potentially explosive state
Keg (usually made of metal) for gunpowder or blasting powder
Example Sentences
"The political instability in the region has turned it into a powder keg."
"The tense relationship between the two countries could ignite the powder keg of war."
"The racial tensions in the city are like a powder keg ready to explode."
"The economic crisis has transformed the nation into a powder keg of protests."
"The heated argument at the meeting turned the room into a powder keg of emotions."