Something, such as a material object or a nonsexual part of the body, that arouses sexual desire and may become necessary for sexual gratification.
An abnormally obsessive preoccupation or attachment; a fixation.
an object of irrational reverence or obsessive devotion
an object or bodily part whose real or fantasized presence is psychologically necessary for sexual gratification and that is an object of fixation to the extent that it may interfere with complete sexual expression
any nonsexual object, such as a foot or a glove, that abnormally excites erotic feelings
any object or nongenital part of the body that causes a habitual erotic response or fixation.
Here are a bunch of definitions for you.
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