Biauriculate \Bi`au*ric"u*late\, a. [Pref. bi- + auriculate.]

1. (Anat.) Having two auricles, as the heart of mammals, birds, and reptiles.

2. (Bot. & Zo["o]l.) Having two earlike projections at its base, as a leaf.

Source: Webster's Revised Unabridged Dictionary (1913)