A more thorough explanation:

boc

A boc is a written document that is used to convey land ownership. It was commonly used in the past.

• John received a boc from his grandfather, which showed that he owned a piece of land in the countryside.
• The boc was written in Old English and was difficult to read, but it was an important legal document.

The examples illustrate how a boc was used to show ownership of land. In the past, people used bocs to prove that they owned a piece of land. The boc was a legal document that was written down and could be used in court if there was a dispute over who owned the land. Today, we use different types of legal documents to show ownership, but the boc was an important part of history.