"Pure-bloods" typically refer to individuals or families who have ancestry that is entirely from a specific group, often used in the context of wizarding or magical communities. In literature, particularly in the Harry Potter series, pure-bloods are wizards and witches who can trace their lineage back through generations of magical ancestry, without any non-magical (Muggle) heritage. The concept of pure-bloods often carries social implications, as some characters in these stories view pure-blood status as a mark of superiority. This belief can lead to discrimination against those with mixed or non-magical backgrounds, highlighting themes of prejudice and elitism within the narrative.