In reference to the reader's question about slot machines where you play for gold or silver tokens: In Las Vegas, many of the casinos have 25-cent slots that pay off a $10 jackpot with a $10 silver souvenir token.
Moth (order Lepidoptera), any of more than 150,000 species of overwhelmingly nocturnal flying insects that, along with the butterflies and skippers, constitute the order Lepidoptera.
Mothballs are small balls of chemical pesticide traditionally used to keep moths out when storing clothing. The mothballs you buy these days are typically made of a chemical known as 1,4-dichlorobenzene (sorry for the science lesson, this is important though).