A three-wheeled vehicle is a type of vehicle that has three wheels instead of the traditional four. The most common types of three-wheeled vehicles are trikes, tricycles, and pedicabs. Trikes are five-letter words that refer to a three-wheeled vehicle with one wheel in the front and two in the back. Tricycles are eight-letter words that refer to a three-wheeled vehicle with two wheels in the front and one in the back. Pedicabs are seven-letter words that refer to a three-wheeled vehicle that is powered by a person pedaling.