a javelin.. its like a long spear.
A knight's weapon that can be thrown is a dagger or a javelin. These weapons were used for ranged attacks or as a last resort when engaged in close combat. Javelins were particularly effective in disrupting enemy formations from a distance.
A Grenade.
Spear most likely, it can be thrown too.
boomerang
boomarang
yes why do you think knights use it?
Light saber
Yes.
The European knights wore a suit of armor and their weapon is a sword
Yes.
A stone that could be thrown .
A silver knife, thrown by Bellatrix.
Probably as a weapon to be thrown, or as a cave shelter.