If you have noticed a hole in butcher knives and wonder what they are for, here is the answer. They have a hole so that butchers can conveniently hang them to any nail or hanger. Since it is big in size, it is a bit tough to fit them in the drawer. If you have been searching for one, then you can find a wide range of flexible to stiff meat, fish and chicken boning knives for sale in the market. Just like butcher knives, many other types of knives also have the same kind of hole for this purpose.