A fulcrum is the support about which a lever turns, or the point at which a bar or something that is balancing is supported or balances. It is a fundamental component in the functioning of a lever, providing support and enabling the lever to pivot. For example, a seesaw balances at its fulcrum
. In a more figurative sense, the term "fulcrum" can also be used to describe something that plays an essential role or serves as the center of an activity or situation, such as "the fulcrum of the debate"
