A muscle or nerve related to the ear, or the scientific name for the auricularia fungus.
From Latin 'auricula' (ear, diminutive of 'auris') plus the suffix '-aris' (relating to). Used both in anatomy and mycology.
Your body has muscles specifically for moving your ears—they're called 'auricularis' muscles—and while most humans can barely wiggle theirs anymore, horses and cats can rotate their ears completely to locate sounds, using these same muscles in a much more practical way.
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