navelwort

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various Eurasian plants of the genus Omphalodes, having cymes of usually blue flowers and nutlets with a navellike depression on one side.

from The Century Dictionary.

• noun 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.
• noun A plant of the genus Omphalodes: so called from the form of the nutlets. O. verna is the blue or spring navelwort, O. linifolia the white navelwort; both are garden-flowers.

from the GNU version of the Collaborative International Dictionary of English.

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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun botany A European perennial succulent herb with round, peltate leaves with a central depression.