Definitions

1. noun

A fossilized tree trunk or other piece of wood that has been worn into a smooth, rounded shape by erosion.

“The park ranger pointed out a large glyptolith on the riverbank, which was a testament to the river’s long history of flowing through the area.”

2. noun

In archaeology, a small, usually rounded, stone or piece of wood that has been carved or smoothed by human hands.

“The archaeologist carefully examined the glyptolith to determine its age and the purpose for which it was created.”