incidental. Contingent upon or pertaining to something that is more important; that which is necessary, appertaining to, or depending upon another known as the principal.nder Workers' Compensation statutes, a risk is deemed incidental to employment when it is related to whatever a worker must do in order to fulfill the employment contract, but is not the primary function that the worker was hired to do.
A cultivator is both a general term for any tool that is used to prepare soil for planting, and the name of four specific tools: a piece of machinery attached to a tractor, a small engine-propelled machine, a hand-action tool, and a traditional hand-tool.
Different types are used for preparation of fields before planting, and for the control of weeds between row crops. The cultivator may be an implement trailed after the tractor via a drawbar; mounted on the three-point hitch; or mounted on a frame beneath the tractor. Active cultivator implements are driven by a power take-off shaft.