drag bit

drag bit (plural drag bits)

1. A drill bit usually designed for use in soft formation, such as sand clay, or some soft rock. Uses include drilling water wells, that consists of a drill pipe connector attached to blades on the end. The cutting edge of the drag bit is often tungsten carbide.

• chevron bit

• Drag bit, Drilling word of the week, by Clear Creek Associates

• dirt bag, dirtbag