DICT.TW Dictionary Taiwan

 jack oak
      n 1: 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 [syn:
            blackjack oak, blackjack, Quercus marilandica]
      2: small to medium deciduous oak of east central North America;
         leaves have sharply pointed lobes [syn: northern pin oak,
          Quercus ellipsoidalis]