Older Form of Explosive, Also Slang for Excellent
Puzzle 5 of Housewarming Gifts Pack
Question is: Older Form of Explosive, Also Slang for Excellent
and the answer is: DYNAMITE
Word Meaning:
DYNAMITE — A class of explosives made from nitroglycerine in an absorbent medium such as kieselguhr, used in mining and blasting.
Definitions from Wiktionary.