The sica, or siccae, was a curved scimitar, a short, curved sword, with a blade about 16-18 inches long - the most common Dacian sword (The inhabitants of Dacia are generally considered as belonging to the Thracian nations). The sica was commonly used by a Thrax (Thracian) gladiator and the Dimachaerus.
Fascina were long, three-pronged, metal tridents (harpoons) that were used by the gladiators called the Retiarii.
The iaculum was a weighted casting net - the weapon of a retiarius.
The Gladius was the 27 inch short straight sword, broad towards the handle, after which the gladiator was named. The gladiators who used the gladius were those who were armed with body-shields such as the secutor, myrmillo, hoplomachus, and the dimacheris.
The Gladius Graecus was a leaf-shaped short sword originally used by the Greek hoplites. Hoplites were the citizen-soldiers of the Ancient Greek City-states which included Sparta. The Gladius Graecus was used by the Busturius and Hoplomachus gladiators.
A dagger, weapon of last resort of the Retiarii. The handle was shaped to fit snugly in the hand, and the blade was made from either iron or bronze and was pear shaped.
The Spatha was a long sword, over 75 cms, used by the Roman cavalry and the type of Gladiator who rode on horseback. A smaller version of the spatha sword was used in close combat use in the Roman army before the gladius was introduced.
Hasta (pl.Hastae) is a Latin word meaning spear. The hasta was not thrown, it was used for thrusting and approximately six feet in length.
The Roman sling was called a sphendone.
A 6ft long thick wooden spear reinforced with long, winged head with an iron point. Used by Venotores for hunting and also by Essadari.