People that study fish are called ichthyologists. The little lump of flesh just forward of your ear canal is called a tragus – it also aids in capturing sounds that come from behind you. The pin that holds a hinge together is called a pintle. The gland responsible for producing the hormone that regulates growth is called the pituitary gland. It is the size of a pea. A melody is a group of notes in a certain order that results in a sweet or agreeable sound. An easily remembered melody is called a tune. Compulsive shopping was identified by a German psychiatrist almost a hundred years ago. Clinically it is known as oniomania. Shopaholics are the people who do not suffer from chrematophobia, which is the fear of touching money.