[LGBTQIA+phobes, stay away. This site is not made for you. You have no right to delete the information here and be rude.]
Non-binary (sometimes shortened to NB, or enby) refers to someone whose gender does not fall strictly within the category of binary genders (man or woman) that is used in western society. Anyone who is not always 100% male, or always 100% female can be considered non-binary. That said, some non-binary people may identify with one or both of the binary genders, at least in part.