What is "trepanation"

n. The practice of drilling a hole in the skull as a physical, mental, or spiritual treatment.

Trepanation is the first album composition by the industrial metal band American Head Charge, released independently by the group on July 18, 1999.

Trepanation/Trepanning may refer to:

• Trepanning, a form of surgery in which a hole is bored into the skull
• Trepanning (manufacturing), a type of drilling designed for large holes in metal and rock workpieces
• Trepanation (album), the first American Head Charge album
• Trepanation, a technique used by bomb disposal units

Trepanation could also mean the use of a Trepan, which may refer to:

• Trepan (drill bit), a type of industrial drill bit commonly used to bore large holes in metal and rock
• Trepan, a rock-boring tool used for sinking mine shafts