Someone who doesn't eat certain kinds of meat. Religious or ethical reasons could play a part, but in this day and age when some animals are fed the blood and feces of other animals it doesn't take ethics to understand mainstream meat processing methods are unhealthy.

As an example... a person who eats chicken and turkey, but won't eat red meat is bivegetarian.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.