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jack oak

the blackjack, Quercus marilandica.
Origin of jack oak
An Americanism dating back to 1810-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for jack oak
Historical Examples
  • The shingle oak is known as jack oak in some parts of Illinois.

    American Forest Trees Henry H. Gibson
  • In North Carolina they call the tree water oak, which name, like jack oak, is often used to conceal ignorance of the true name.

    American Forest Trees Henry H. Gibson
  • It is also called black oak, peach oak, jack oak and water oak.

    Trees of Indiana Charles Clemon Deam

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