Day of the word
au·ric·u·lar 
1.of or pertaining to the ear or to the sense of hearing; aural. 2.perceived by or addressed to the ear; made in private: an auricular confession. 3.dependent on hearing; understood or known by hearing: auricular evidence. 4.shaped like an ear; auriculate. 5.Anatomy. pertaining to an auricle of the heart. 6.Ornithology. pertaining to certain often modified feathers that cover and protect the opening of a bird's ear. -noun 7.Usually, auriculars. Ornithology. feathers that cover and protect the opening of a bird's ear.
Adapted from Dictionary.com
1.of or pertaining to the ear or to the sense of hearing; aural. 2.perceived by or addressed to the ear; made in private: an auricular confession. 3.dependent on hearing; understood or known by hearing: auricular evidence. 4.shaped like an ear; auriculate. 5.Anatomy. pertaining to an auricle of the heart. 6.Ornithology. pertaining to certain often modified feathers that cover and protect the opening of a bird's ear. -noun 7.Usually, auriculars. Ornithology. feathers that cover and protect the opening of a bird's ear.
Adapted from Dictionary.com