twinflower noun2 •Any member of the species Linnaea borealis of woodland subshrubs with opposite evergreen rounded oval leaves and pendulous pink flowers that occur in pairs.The Twinflower Linnaea borealis is a common plant in the northern Scandinavian forests that Linnaeus encountered on a trip he made through Lapland in 1732. — 2020 •Any member of the species Dyschoriste oblongifolia of dicotyledonous flowering plants of the family Acanthaceae, native to coastal plains regions of the United States. formstwinflowers