Other forms: auricularly
Something that's auricular has to do with ears or hearing. An auricular message might be one you whisper into your friend's ear.
You can use auricular to describe things that are shaped like an ear, like an auricular shell on the beach or an auricular flower in a garden. Other things are auricular because they're heard or are otherwise related to ears. The auricular muscles, for example, are the ones around your ears. Things having to do with the (ear-shaped) auricles, or atriums, of the heart can also be described as auricular. The Latin root is auricula, or "ear."