Definition: The word "si01" was a Hebrew term used for describing a type or quality of an object, often in connection with its weight. It's often used to indicate that something is exceptionally heavy, substantial, or especially durable. The precise meaning can vary depending on the context and cultural norms in which it is used. For example, "si01" could refer to a particularly heavy iron object, such as an ancient vessel, in the context of history or archaeology.