In the context of drilling, an "auger head" typically refers to the cutting end of the auger used for drilling holes in the ground. The auger head consists of the helical flighting (the spiral blades) that wrap around the central shaft. When drilling, the auger head is the part that makes contact with the material being drilled (e.g., soil, wood, or other soft materials) and is responsible for breaking up and moving the material as the auger rotates.