The falx was a weapon with a curved blade that was sharp on the inside edge used by the Thracians and Dacians. The name was later applied to a siege hook used by the Romans. Etymology Falx is a Latin word originally meaning 'sickle' but was later used to mean any of a number of tools that had a curved blade that was sharp on the inside edge like a sickle. Falx was thus also used to mean the weapon of the Thracians and Dacians, and the Roman siege hook. Dacian falx In Latin texts, the weapon was described as an (whence falcata) by Ovid in Metamorphose and as a by Juvenal in Satiriae. The Dacian falx came in two sizes: one-handed and two-handed. The shorter variant was called sica (sickle) in the Dacian language (Valerius Maximus, III, 2.12) with a blade length that varied but was usually around long with a handle 1/3 longer than the blade. The two-handed falx was a polearm. It consisted of a long wooden shaft with a long curved iron blade of nearly-equal length attached to the end. Archaeological evidence indicates that the one-handed falx was also used two-handed. The blade was sharpened only on the inside and was reputed to be devastatingly effective. However, it left its user vulnerable because, being a two-handed weapon, the warrior could not also make use of a shield. It may be imagined that the length of the two-handed falx allowed it to be wielded with great force, the point piercing helmets and the blade splitting shields – it was said to be capable of splitting a shield in two at a single blow. Alternatively, it might have been used as a hook, pulling away shields and cutting at vulnerable limbs, or striking the edge of a strong shield. The inward curving point was still able to pierce the armour or flesh of the target behind the shield, rendering even the most reinforced shields much less effective against a falx wielder. Trajan's column is a monument to the emperor’s conquest of Dacia. The massive base is covered with reliefs of trophies of Dacian weapons and includes several illustrations of the two-handed falx. The column itself has a helical frieze that tells the story of the Dacian wars. On the frieze, almost all the Dacians that are armed have shields and therefore cannot be using two-handed falx. The exact