navelwort

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. See pennywort.
2. n. Any of various Eurasian plants of the genus Omphalodes, having one-sided cymes of usually blue flowers.
3. n. See water pennywort.

Century Dictionary and Cyclopedia

1. n. A plant of the genus Cotyledon, chiefly C. Umbilicus: so called from the shape of the leaf. See Cotyledon, 2, jack-in-the-bush, 2, and kidneywort, 1.
2. n. A plant of the genus Omphalodes: so called from the form of nutlets. O. verna is the blue or spring navelwort, O. linifolia the white navelwort; both are garden-flowers.

Wiktionary

1. n. botany A European perennial succulent herb with round, peltate leaves with a central depression.

GNU Webster's 1913

1. n. (Bot.) A European perennial succulent herb (Cotyledon umbilicus), having round, peltate leaves with a central depression; -- also called pennywort, and kidneywort.