Source : WordNet®

spirea
     n 1: 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 [syn: {spiraea}, {Astilbe
          japonica}]
     2: any rosaceous plant of the genus Spiraea; has sprays of
        small white or pink flowers [syn: {spiraea}]