Now, the VOA Special English program WORDS AND THEIR STORIES.

Some expressions describe people who are important, or who at least think they are. One such expression is bigwig.

In the seventeenth century, important men in Europe began to wear false hair, called wigs. As years passed, wigs began to get bigger. The size of a man's wig depended on how important he was. The more important he was -- or thought he was -- the bigger the wig he wore. Some wigs were so large they covered a man's shoulders or back.

Today, the expression bigwig is used to make fun of a person who feels important. People never tell someone he is a bigwig. They only use the expression behind his back.

Big wheel is another way to describe an important person. A big wheel may be the head of a company, a political leader, a famous movie star. They are big wheels because they are powerful. What they do affects many people. Big wheels give the orders. Other people carry them out. As in many machines, a big wheel makes the little wheels turn.

Big wheel [became] a popular expression after World War Two. It probably comes from an expression used for many years by people who fix parts of cars and trucks. They said a person rolled a big wheel if he was important and had influence.

The top of something is the highest part. So it is not surprising that top is part of another expression that describes an important person. The expression is top banana. A top banana is the leading person in a comedy show. The funniest comedian is called the top banana. The next is second banana. And so on.

Why a banana? A comedy act in earlier days often included a part where one of the comedians would hit the others over the head with a soft object. The object was shaped like the yellow fruit: the banana.

Top banana still is used mainly in show business. Yet the expression can also be used to describe the top person in any area.

A kingpin is another word for an important person. The expression comes from the game of bowling. The kingpin is the number one pin. If hit correctly with the bowling ball, the kingpin will make all the other nine pins fall. And that is the object of the game.

So, the most important person in a project or business is the kingpin. If the kingpin is removed, the business or project is likely to fail.

Kingpin is often used to describe an important criminal, or the leader of a criminal gang. A newspaper may report, for example, that police have arrested the suspected kingpin of a car-stealing operation.

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This VOA Special English program, WORDS AND THEIR STORIES, was written by Marilyn Christiano. I'm Warren Scheer.