adjective
known or understood by very few; mysterious; secret; obscure.
EXAMPLES OF ARCANE
noun
a coarse, dark, slightly sour bread made of unbolted rye.
EXAMPLES OF PUMPERNICKEL
noun
an orange that is peeled and eaten under a steamy shower, the purported benefit being that the steam enhances the orange’s citrusy fragrance and creates a soothing experience for the person who is showering.
EXAMPLES OF SHOWER ORANGE