Auriculate \Au*ric"u*late\, Auriculated \Au*ric"u*la`ted\, a. [See Auricle.]

(Biol.) Having ears or appendages like ears; eared. Esp.:
   (a) (Bot.) Having lobes or appendages like the ear; shaped like the ear; auricled.
   (b) (Zo["o]l.) Having an angular projection on one or both sides, as in certain bivalve shells, the foot of some gastropods, etc.

Auriculate leaf, one having small appended leaves or lobes on each side of its petiole or base.

Source: Webster's Revised Unabridged Dictionary (1913)