pennywort

Short definition from Wiktionary

Noun

1. 1
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Any of species Umbilicus rupestris of succulent, perennial flowering plants (penny-pies, wall pennywort, kidney wort, navelwort) in the stonecrop family (Crassulaceae).
2. 2
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: An edible Asiatic pennywort (Centella asiatica)
3. 3
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Any aquatic or semi-aquatic plant in the genus Hydrocotyle (water pennywort, Indian pennywort, marsh penny, thick-leaved pennywort, and white rot).
4. 4
   Any aquatic or semi-aquatic plant in the genus Hydrocotyle (water pennywort, Indian pennywort, marsh penny, thick-leaved pennywort, and white rot): such as the edible dollarweed (Hydrocotyle umbellata)
5. 5
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Liverleaf (Anemone hepatica, liverwort)
6. 6
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Virginian pennywort (Obolaria virginica)
7. 7
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Ivy-leaved toadflax (Cymbalaria muralis)
8. 8
   Any of several not closely related plants around the world, generally with round leaves of about the shape and size of a penny: Any of species Cymbalaria aequitriloba, a plant with tiny ivy-like leaves and copious purple-pink flowers with yellow throats.