Noun arethusa has 1 sense
  1. arethusa - any of several bog orchids of the genus Arethusa having 1 or 2 showy flowers
    --1 is a kind of
    orchid, orchidaceous plant
    --1 is a member of genus Arethusa
    --1 has particulars: bog rose, wild pink, dragon's mouth, Arethusa bulbosa
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