1 In this sense it is nearly synonymous with synopsis. ( 2 n.) The tracing of things to their source, and the resolving of knowledge into its original principles. ( 3 n.) A syllabus, or table of the principal heads of a discourse, disposed in their natural order.
A lightning rod or lightning conductor is a iron rod that is used to make lightning strike it, rather than strike something else. It is part of a lightning protection system. Such a system is made of many such rods. These rods are usually placed at high points of buildings and structures.
The sole purpose of the tie rod is to connect the two front wheel hubs together so that when one turns, the other will turn the same amount. The tie rod connects to the steering knuckle on the wheel hub, which is an arm that sticks out from the hub at an angle.