WordNet (r) 3.0 (2006):
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: spirea, spiraea, Astilbe japonica] 2: any rosaceous plant of the genus Spiraea; has sprays of small white or pink flowers [syn: spirea, spiraea]