The little finger, the outermost and smallest finger of the hand.

(humorous) The ear.

(relational) An adjective "auricular" refers to something related to the ear, specifically pertaining to the sense of hearing, being told privately, or understood by the sense of hearing.

(anatomy, relational) Pertaining to the auricles of the heart.

(art, relational) Pertaining to a style of ornamental decoration, originating in Northern Europe in the first half of the 17th century, that uses softly flowing abstract shapes in relief some of which bear a resemblance to the human ear; commonly used in silverware, picture frames, and architecture.