1. The soft spungy substance in the center of plants and trees.

2. In animals, the spinal marrow.

3. Strength or force.

4. Energy; cogency; concentrated force; closeness and vigor of thought and style.

5. Condensed substance or matter; quintessence. The summary contains the pith of the original.

6. Weight; moment; importance.

Enterprises of great pith and moment.