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blue·weed | \ ˈblü-ˌwēd 
\
\Definition of blueweed
1 : viper's bugloss
2 : a small weedy sunflower (Helianthus ciliaris) of the southwestern U.S. with blue-green or gray-green foliage
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Time Traveler for blueweed
The first known use of blueweed was in 1818
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