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| acorn |
the fruit of the oak tree, having a smooth, ovoid nut partially enclosed by a rough, cuplike base. |
| blackjack |
a small oak with black bark, found in the southeastern United States. [1/6 definitions] |
| cork |
a species of oak native to the Mediterranean area, having thick, porous, water-resistant bark. [1/6 definitions] |
| encina |
an evergreen oak of the southwestern United States that is often cultivated as a shade tree. |
| gallnut |
a gall that resembles a nut, esp. as found on an oak tree; nutgall. |
| hardwood |
any of several types of tree, such as the oak, cherry, or mahogany, that have broad leaves, bear seeds enclosed in an ovary, and yield dense, compact wood. [1/2 definitions] |
| holm oak |
an oak native to southern Europe with prickly evergreen leaves that resemble holly. |
| ilex |
holm oak. [1/2 definitions] |
| kermes |
an evergreen oak tree of the Mediterranean on which this insect is found. [1/3 definitions] |
| nutgall |
a nut-shaped protuberance caused by parasitic wasps, esp. on oak trees. |
| 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. [1/2 definitions] |
| roble |
a tall California white oak with leathery leaves and narrow, pointed acorns. [1/2 definitions] |
| shillelagh |
in Ireland, a club, esp. of blackthorn or oak wood; cudgel. |
| tagboard |
a heavy cardboard used for mountings, posters, and the like; oak tag. |
| tanbark |
the bark of various trees such as oak or hemlock, as a source of tannin. |
| white oak |
a large oak of eastern North America that has a light gray to white bark, and yields a hard, light-colored wood. |
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