Videokeystone
/'ki:stoun/
The word keystone is a powerful noun that describes the central building block at the top of an arch. While it has its roots in architecture, it is frequently used figuratively to describe any central cohesive source of support and stability in a system or plan. In this lesson, we explore how a keystone locks a structure together and how the term applies to everything from ecology to legal arguments. You will learn about related terms like linchpin and the distinction between a keystone and a cornerstone. Watch the lesson to master this essential vocabulary word.
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