potshard
/ˈpɒtʃɑːrd/Definitions
1. noun
a fragment or shard of pottery, especially one that is significant or of interest for its age, provenance, or other value.
“The archaeologist carefully excavated a potshard that dated back to the ancient civilization.”
2. noun
a fragment or shard of pottery that has been broken and is often still in the ground.
“The excavation uncovered numerous potshards that had been buried for centuries.”