A "walk-behind" refers to a type of equipment or machinery that is designed to be operated while the user walks behind it. This category includes various tools such as lawn mowers, snow blowers, and floor scrubbers. Walk-behind machines are typically user-friendly and allow for greater control and maneuverability in tight spaces. These machines are often powered by gasoline or electricity and are popular for both residential and commercial use. Walk-behind equipment is favored for its efficiency and ease of use, making it suitable for tasks like maintaining lawns or cleaning large areas without the need for a riding vehicle.