Scenario

Scenario is a narrative, which most commonly describes foreseeable interactions of user roles. A scenario has a goal, which is usually functional. Scenarios are frequently used as part of the system development process. Scenarios are written in plain language, with minimal technical details, so that stakeholders (designers, usability specialists, programmers, engineers, managers, marketing specialists, etc.) can have a common example which can focus their discussions. (Source: WikiPedia)