A Smokeless Propellant Used in Munitions
Puzzle 5 of World of Illusion Hard Pack
Question is: A Smokeless Propellant Used in Munitions
and the answer is: CORDITE
Word Meaning:
CORDITE — A smokeless propellent made by combining two high explosives, nitrocellulose and nitroglycerine, used in some firearm ammunition.
Definitions from Wiktionary.