sawlog

The term sawlog is a log of suitable size for sawing into lumber, processed at a sawmill.{{Cite web|url=https://www.merriam-webster.com/dictionary/sawlog|title = Definition of SAWLOG}} This is in contrast to those other parts of the stem that are designated pulpwood. Sawlogs will be greater in diameter, straighter and have a lower knot frequency.

Sawlogs most often come from the "butt end" of the stem and are the most financially valuable part of the tree.