Definition of bluejack
:an oak (Quercus cinerea) of the southern U.S. with entire cuneate leaves and numerous small acorns
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bluejack
noun
blue·jack
\
ˈblüˌjak
\
variants:
or less commonly
bluejack oak
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Origin and Etymology of bluejack
1blue + -jack (as in blackjack oak); from the ashy appearance of the foliage
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