According to Dr. Maung Gyi, there are several explanations regarding the cho (a.k.a. kowdi, Surya ra Chandra, etc.,)
The British claim that the notch was made to catch or stop an enemy sword from slipping or sliding down to the hand.
An elder from a Bantawa clan in eastern Nepal explained that all tools must have their appropriate sacred symbols (like a rabbits foot) to prevent harm to oneself, honor the gods, and increase strength from the spirits.
The notch also may symbolize the sacred Yoni of the Goddess of War: Kali.
Gurkha officer Jemadur Narabahdur Rai of the 10th Gurkha Rifles (on which Dr. Gyi served) says that the notch helps stop the flow of enemy blood onto the hand, preventing slipping of grip. The blood will drip down at the point of the notch.
Whatever explanation you choose to believe, they offer insight to the long history of the kukri and the Gurkhas.
Tim
http://www.streetpro.com
Street Smart Professional Equipment
PS. Uncle Bill, do you have any 20" Sirupatis in stock? I want one!
[This message has been edited by Arnistador (edited 30 August 1999).]