单词 | bluejack |
释义 | bluejack /blooh"jak'/, n. a small oak, Quercus incana, of the southern U.S., having crooked branches and blue-green leaves. Also called bluejack oak. [1855-60, Amer.; BLUE + JACK1, modeled after BLACKJACK; so called from the bluish look of the leaves] |
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