(1)any of various shrubs of the genus Deutzia having usually toothed opposite leaves and shredding bark and white or pink flowers in loose terminal clusters
(2)白またはピンク色の花をゆるい末端の房があり、通常ぎざぎざの対生の葉と、細かく刻まれた皮のあるウツギ属の様々な低木のいずれか