ˈwu̇(ˌ)drəf noun
( -s )
Etymology: Middle English woderofe, woderove, from Old English wudurofe, from wudu wood + -rofe (perhaps akin to Old Norse rōfa hard part of a tail, Middle Low German röve turnip) — more at wood , rape (herb)
: a plant of the genus Asperula: as
a. : sweet woodruff
b. : dyer's woodruff