The vertical channels employed in the shaft of columns in the classic styles. The flutes are separated one from the other by an arris in the Greek Doric and early Ionic orders, and by a fillet in the developed Ionic and Corinthian orders. Back
Hollows cut perpendicularly in columns, pilasters, legs, friezes, aprons, etc. Good flutes are close together and deep, with a sharply scooped curve for the ending. The ridge between the flutes is a fillet.
Bamboo flutes represent strength and support and are a popular Feng Shui cure. They can be hung from beams to soften poison arrows or over the front entrance to symbolize security and protection from negative forces.