wood·ruff 
(wdrəf, -rŭf′)
(wdrəf, -rŭf′)n.
1. Any of various plants of the genus Asperula, having whorled leaves and small funnel-shaped flowers.
2. The cultivated plant sweet woodruff, formerly classified in the genus Asperula.
[Middle English woderofe, from Old English wudurofe : wudu, wood + -rofe, of unknown meaning.]
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