A string trimmer, also known as a weed eater or line trimmer, is a gardening tool used for cutting grass and weeds in areas that are difficult to reach with a lawn mower. It features a long shaft with a rotating head that uses a flexible nylon line to trim vegetation. This tool is especially useful for edging along sidewalks, fences, and flower beds. String trimmers come in various types, including gas-powered, electric, and battery-operated models. Each type has its advantages, such as portability or ease of use. They are essential for maintaining a neat and tidy yard, making them popular among homeowners and landscapers alike.