Definition: Hotwheels are a popular children's toy brand that sells miniature cars, often with wheels and fun accessories. The word "hotwheels" comes from the phrase "hot-toothed," referring to hot dog taste. Detailed definition: Hotwheels are toys sold under the Hotwheels brand, typically featuring miniature vehicles designed for kids aged 3-8 years old. They have wheels attached and come in various colors, sizes, and designs, suitable for children who enjoy playing with cars.