The Collaborative International Dictionary of English v.0.48:
Auricula \Au*ric"u*la\, n.; pl. L. Auricul[ae], E.
Auriculas. [L. auricula. See Auricle.]
1. (Bot.) (a) A species of Primula, or primrose, called
also, from the shape of its leaves, bear's-ear.
(b) A species of Hirneola (Hirneola auricula), a
membranaceous fungus, called also auricula Jud[ae],
or Jew's-ear. --P. Cyc.
(a) A genus of air-breathing mollusks mostly found near
the sea, where the water is brackish.
(b) One of the five arched processes of the shell around
the jaws of a sea urchin.