| holm oak |
an oak native to southern Europe with prickly evergreen leaves that resemble holly. |
| Jerusalem oak |
a North American weed with lobed leaves and an odor like turpentine. |
| live oak |
any of various evergreen oaks of the southeastern or southwestern United States. [2 definitions] |
| oak apple |
a harmless, applelike gall produced on oak trees by the larvae of a type of wasp. |
| oak-leaf cluster |
a small bronze or silver cluster of oak leaves and acorns worn on the ribbon of a medal to signify multiple awardings of the same medal. |
| pin oak |
either of two tall oak trees of the eastern United States that are valued for their lumber and as shade trees. |
| poison oak |
a western North American shrub bearing leaves that often resemble oak leaves and secreting an oil that can cause a severe rash on contact. [2 definitions] |
| red oak |
any of several North American oaks that have dark bark, leaves with pointed tips, and a two-year maturation for their acorns. [2 definitions] |
| white oak |
a large oak of eastern North America that has a light gray to white bark, and yields a hard, light-colored wood. |