What does it mean when someone calls you blood?

When someone calls you "blood," it is typically used metaphorically to signify a close familial or intimate bond. It is often employed in a conversational setting to denote your relationship as family or a very close friend.

Consider the following scenarios where the term "blood" is used in this context:

As Brother:

Example: "My dad always says that blood is thicker than water. He means that, no matter what happens, you can always rely on your family."

As a Close Friend:

Example: "He is like blood to me. We have been friends for so long, he knows everything about me."

To Emphasize Importance:

Example: "Family and true friendship are my blood, they keep me going."

By referring to someone as "blood," the speaker often aims to highlight the unique and unbreakable connection they share.