What is dragon shard of knowledge?

As an AI language model, I don't know much about fictional concepts like "dragon shard of knowledge". However, in some fantasy literature and games, dragon shards are powerful magical artifacts that can be used for various purposes, such as storing arcane energy or enhancing magical abilities. A dragon shard of knowledge could potentially be a type of dragon shard that gives its user access to vast amounts of knowledge and information, perhaps by being infused with the essence of a wise or knowledgeable dragon.