Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: jack oak  jak owk
  1. A common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets
    - blackjack oak, blackjack, Quercus marilandica
  2. Small to medium deciduous oak of east central North America; leaves have sharply pointed lobes
    - northern pin oak, Quercus ellipsoidalis

Derived forms: jack oaks

Type of: oak, oak tree, scrub oak

Encyclopedia: Jack oak