meadowsweet noun. 
['mɛdǝʊswi:t] M16.[from MEADOW + SWEET adjective.]A plant of the rose family, 
Filipendula ulmaria, of wet meadows and stream banks, with panicles of creamy-white fragrant flowers; 
US any of several shrubs of the allied genus 
Spiraea. 
 [TahlilGaran] English Dictionary ▲