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jack oak
 
Noun jack oak has 2 senses
  1. blackjack oak, blackjack, jack oak, Quercus marilandica - a common scrubby deciduous tree of central and southeastern United States having dark bark and broad 3-lobed (club-shaped) leaves; tends to form dense thickets
    --1 is a kind of scrub oak
  2. jack oak, northern pin oak, Quercus ellipsoidalis - small to medium deciduous oak of east central North America; leaves have sharply pointed lobes
    --2 is a kind of oak, oak tree
jack kennedy jack kerouac jack ladder jack lemmon jack london jack mackerel jack nicklaus jack o lantern jack oak jack of all trades jack of all trades master of none jack of all traits jack off jack pine jack plane jack roosevelt robinson jack salmon

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