proper nounPlānārĭaPLANARIA☆ KeepMeaningan island in the Tyrrhenian SeaLewis & Short 1879ModernAs printed, 1879PLANARIALEWIS & SHORTPLANARIAPlānārĭa, ae, f., I. an island in the Tyrrhenian Sea, near Elba, another name for Planasia, Plin. 3, 6, 12, § 80.Read the whole entry