Noun spiraea has 3 senses
  1. spirea, spiraea, Astilbe japonica - a Japanese shrub that resembles members of the genus Spiraea; widely cultivated in many varieties for its dense panicles of flowers in many colors; often forced by florists for Easter blooming
    --1 is a kind of astilbe
  2. spirea, spiraea - any rosaceous plant of the genus Spiraea; has sprays of small white or pink flowers
    --2 is a kind of shrub, bush
    --2 is a member of Spiraea, genus Spiraea
    --2 has particulars:
     bridal wreath, bridal-wreath, Saint Peter's wreath, St. Peter's wreath, Spiraea prunifolia
  3. Spiraea, genus Spiraea - a dicotyledonous genus of the family Rosaceae
    --3 is a kind of rosid dicot genus
    --3 is a member of Rosaceae, family Rosaceae, rose family
    --3 has members: spirea, spiraea