The woomerah is a spear thrower used to increase the force of a spear's throw. Spear throwers are generally elongated in shape and may be engraved with Dreamtime motifs or simply polished. 

In central and southern Australia, the beaks extend from the body; those in the north generally have a perpendicular beak, like this one dating from the second half of the 20th century. At one end is a handle for holding the object. It is made of double-sided shell valves with ritual significance. This decoration is even found in inland regions, reflecting exchanges between different regions of Australia connected by Dreamtime tracks. At the other end, the spear rests on a wooden beak-shaped notch, which is sometimes made from wallaby tibia. The different parts of the woomerah can be held together with spinifex (desert cactus) resin or beeswax.