Any sort of stick, club, or long object that may be used in self-defense to physically keep an aggressor at a safe distance when traditional body-armour is lacking. Stick-Armour is used exclusively as a self-defense tool, not a weapon.
"When you're walking down the street and get jumped, whip out your Stick-Armour!"
"Hector skipped a trip to the ER on account of his Stick-Armour."