Pin tumbler lock. A common type of pin tumbler lock, of the euro cylinder type. The pin tumbler lock (or Yale lock, after lock manufacturers Yale) is a lock mechanism that uses pins of varying lengths to prevent the lock from opening without the correct key.
noun. A person creating a diagram. A person creating a diagram. The definition of a diagram is a graph, chart, drawing or plan that explains something by showing how the parts relate to each other. An example of diagram is a chart showing how all the departments within an organization are related.
The Plot Diagram is an organizational tool focusing on a pyramid or triangular shape, which is used to map the events in a story. This mapping of plot structure allows readers and writers to visualize the key features of stories. The basic triangle-shaped plot structure, representing the beginning, middle, and end of a story, was described by Aristotle. Gustav Freytag modified Aristotle's system by adding a rising action and a falling action to the structure. This interactive version of the graphic organizer supports both Aristotle's and Freytag's conceptualizations of plot structures.