moneywort

/ˈmʌniˌwɜrt/
noun
  1. A creeping plant with round, coin-shaped leaves, often grown as ground cover or in gardens.
    • The bright green leaves of moneywort look like tiny coins.
    • She planted moneywort along the edge of the pond.
    • Moneywort spreads quickly and covers bare spots in the garden.
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