A breeder is a word that people use as slang to refer to people who have a lot of kids or who have kids at a really young age. It's not a very nice word because it makes it seem like having a lot of kids is the only important thing about a person, and that's not true. People should be valued for other things too, like their kindness, intelligence, and creativity. So, it's best not to use the word "breeder" and instead get to know people for who they really are.