The term 'neck shape' can be described by the three-letter solution VEE. This is a common shape for the neck of a guitar, which is usually referred to as a 'V-shaped' neck. It is also used to describe the shape of a person's neck, which is often referred to as a 'V-neck' shirt or dress. The VEE shape is also used in architecture and design, where it is often referred to as a 'V-shaped' arch or window.