Related Clues:
- Boomer or buster
- Powder holder
- Cable channel that's a blast?
- It'll bring down the house
- Game ender, perhaps
- Grenade filler
- Unicorn feature, e.g.
- Trumpet or cornet
- Big bang letters
- It can make molehills out of mountains
- Blasting letters
- Stick with a kick
- Cause of many a blowup
- It may have valves
- Explosive cable channel?