neck

脖 is composed of the radical 肉 (flesh) and 孛 (flourish). 孛 is formed from pictographs of grass and an infant, both of which grow rapidly, extending to the meaning of vitality or life force. The neck, made of flesh, is the organ connecting the head to the body, serving as a conduit for the head to receive vitality and nutrients from the body, thus represented by 脖.