an insulting term from the Wizarding World of Harry Potter (created by JK Rowling). The term itself means, dirty blood. The insult is directed towards witches or wizards who are Muggle-born, someone with non-magic parents. This term is usually used by haughty pure-bloods, witches or wizards who are of magical descent and consider themselves to be higher up in rank. Such as the Malfoy family. The term Muggle-born is very much preferred to the term 'Mudblood.' Throughout the course of the books discrimination against Muggle-borns or 'Mudbloods" intensifies.

A wizard or witch who is muggle-born. Muggle meaning non-magical people.

The term used for insulting Muggle-borns or First-Generation witches or wizards. Mudblood is the thing all of the prejudice is based on. Students of Hogwarts seem not to really care about skin color or gender. Instead, it focuses on the bloodline of a witch or wizard. Contrary to popular beliefs, Muggle-borns or Mudbloods are just as good, if not better than Purebloods.

1. A demeaning name for those who are born into muggle families and can use magic. These people tend to be disliked by Slytherins due to Slytherins being pure-blooded and believe that only pure bloods should be able to attend Hogwarts.
2. Tend to be intelligent witches and wizards. e.g. Hermione Granger, Lilly Potter

Violent mud diarrhea experienced next morning after drinking IPAs, mixed with asshole blood from excessive wiping.

A mudblood is a child with one parent who is white and another parent who is black (or sometimes just non-white). The pure white blood has been "dirtied" by the black blood, hence the term "mudblood". The mudblood's white parent is most often refered to as a "mudshark".

The dumbest fucking insult ever to be conjured up.