Any hand held weapon can be thrown. Some weapons that are designed to be thrown are throwing stars, throwing knives, and spears.
A Grenade.
Spear most likely, it can be thrown too.
boomerang
boomarang
A silver knife, thrown by Bellatrix.
A stone that could be thrown .
Probably as a weapon to be thrown, or as a cave shelter.
a weapon that is forcibly thrown or projected at a targets but is not self-propelled
Spear, harpoon, knife, dagger, rock, ...
A boomerang is a weapon that starts with the letter B, and returns to its owner when thrown.
A weapon consisting of balls connected by strong cord, which when thrown entangles the limbs of the quarry.
Native Australian word for a weapon that can return to its owner when thrown.