Navelwort \Na"vel*wort`\, n. (Bot.) A European perennial succulent herb (Cotyledon umbilicus), having round, peltate leaves with a central depression; -- also called pennywort, and kidneywort.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Pennywort \Pen"ny*wort`\, n. (Bot.) A European trailing herb (Linaria Cymbalaria) with roundish, reniform leaves. It is often cultivated in hanging baskets.

March, or Water, pennywort. (Bot.) See under March.

Source: Webster's Revised Unabridged Dictionary (1913)