Definitions for "Self-Propelled"
containing within itself the means of propulsion or movement; "a self-propelled vehicle"
moved forward by its own force or momentum; "a self-propelled egotist"; "the arms program is now self-propelled"
A term that is typically applied to farm machines with integral power units that are capable of moving about as well as performing some other simultaneous operation such as harvesting or spraying a crop.