1. an object regarded with awe as being the embodiment or habitation of a potent spirit or as having magical potency.
2. any object, idea, etc., eliciting unquestioning reverence, respect, or devotion: to make a fetish of high grades.
3. Psychology. any object or nongenital part of the body that causes a habitual erotic response or fixation.
Definitions 1 and 2 are dead to me.