Meadowsweet \Mead"ow*sweet`\, Meadowwort \Mead"ow*wort`\, n.
(Bot.)
The name of several plants of the genus {Spiraea}, especially
the white- or pink-flowered {Spiraea salicifolia}, a low
European and American shrub, and the herbaceous {Spiraea
Ulmaria}, which has fragrant white flowers in compound cymes.
[1913 Webster]