Dictionary
blue flag
noun
Definition of BLUE FLAG
: a blue-flowered iris; especially : a common iris (Iris versicolor) chiefly of the eastern United States with a root formerly used medicinally
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First Known Use of BLUE FLAG
1784
Rhymes with BLUE FLAG
air bag, beanbag, black-flag, brown-bag, chin-wag, dirtbag, dishrag, dog tag, do-rag, fleabag, flight bag, gasbag, grab bag, greylag, handbag, hangtag, ice bag, jet lag, kit bag, mailbag, mixed bag, phone tag, postbag, price tag, ragbag, ragtag, ratbag, red flag, sandbag, schoolbag, seabag, sight gag, Sontag, sweet flag, tea bag, time lag, tote bag, washrag, white flag, wigwag, windbag, workbag, zigzag
Medical Dictionary
blue flag
noun \-ˈflag\
Medical Definition of BLUE FLAG
1
: either of two common blue-flowered irises (Iris versicolor and I. virginica) of the eastern and central United States with rhizomes formerly used medicinally as a cathartic and emetic
2
: the dried rhizome of a blue flag—called also blue flag root
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