Dory is the ancient Greek word for spear. It was about 2.4 metres long.
It was used to great effect in the Spartan shieldwall/Phalanx, when held in an overhand position it allowed the first two lines to attack the enemy.
The Dory had a butt spike mainly for counter-balance, but when the main spear-head broke in combat this was used as a secondary weapon. The rear end was also used by the Spartans in the back to finish off enemies as they passed over them, with the rear end earning the nickname: "Lizard Killer."