sainfoin
noun
sain·foin ˈsān-ˌfȯin 
ˈsan-
ˈsan- : a pink-flowered Eurasian perennial leguminous herb (Onobrychis viciifolia synonym O. viciaefolia) grown for forage
Word History
Etymology
French, from Middle French, from sain healthy (from Latin sanus) + foin hay, from Latin fenum
First Known Use
1626, in the meaning defined above