ARMS was chosen to include swords, long guns, pistols, spears, bows and arrows, crossbows, "Hand Bombs" (yes GRENADES) artillery pieces, cannons, bombards, and "EVERY TERRIBLE WEAPON OF THE SOLDIER" ~Tench Coxe 1788
"Who are the militia? Are they not ourselves? Congress have no power to disarm the militia. Their swords and every other terrible implement of the soldier, are the birthright of an American . . . . The unlimited power of the sword is not in the hands of either the federal or state governments, but, where I trust in God it will ever remain, in the hands of the people." ~Tench Coxe The Pennsylvania Gazette, Feb. 20, 1788
"As civil rulers, not having their duty to the people duly before them, may attempt to tyrannize, and as the military forces which must be occasionally raised to defend our country, might pervert their power to the injury of their fellow-citizens, the people are confirmed by the next article in their right to keep and bear their private arms."~ Tench Coxe (1755–1824), writing as "A Pennsylvanian," in "Remarks On The First Part Of The Amendments To The Federal Constitution," in the Philadelphia Federal Gazette, June 18, 1789, p. 2 col. 1
seeing as he was there, he would be in a position to know what was meant by "arms"