1. A worshipped object that is usually believed to possess magical powers. Usually associated with shamans.
2. (The good one) A sexual fixation(s) that usually differs from those of the standard population. In other words, something (sometimes totally unrelated to sex) that turns you on and that isn't enjoyed by the majority of people.
Foot fetishes, Infantilism, Vore, Macro, Furry, Vampirism, Necro, Bondage, Sadism, Masochism, Slavery... The sky's the limit