The term FRENCH WEAPON can be broken down into two crossword solutions: ARM (3 letters) and ARME (4 letters). ARM is an abbreviation for the French word 'arme' which means weapon. ARME is the French word for weapon, and is used to refer to any type of weapon, from swords and spears to guns and cannons. Historically, France has been known for its advanced weaponry, with many of its weapons being used in wars throughout Europe and beyond.