We don't have synonyms for twinflowers yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are twinflower, twin towers and windflowers.
(n) :
Any of species Linnaea borealis of woodland subshrubs with opposite evergreen rounded oval leaves and pendulous pink flowers that occur in pairs.
(n) :
Any of species Dyschoriste oblongifolia of dicotyledonous flowering plants of the family Acanthaceae, native to coastal plains regions of the United States.
(n) :
Any of species Linnaea borealis of woodland subshrubs with opposite evergreen rounded oval leaves and pendulous pink flowers that occur in pairs.
(n) :
Any of species Dyschoriste oblongifolia of dicotyledonous flowering plants of the family Acanthaceae, native to coastal plains regions of the United States.