pin oak

noun

: a pyramidally crowned deciduous oak (Quercus palustris) especially of wet regions of the eastern U.S. that has deeply cleft toothed leaves and rather small nearly hemispherical acorns

Examples of pin oak in a Sentence

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The species commonly feeds on the larvae of midges or flies that form galls, or growths that develop on plants as a reaction to insects and mites feeding on them, on the edges of pin oak leaves. Mary Walrath-Holdridge, USA Today, 9 Aug. 2025 Nearly invisible to the naked eye at just 0.2 millimeters long, oak leaf itch mites commonly feed on larvae of oak gall midge flies that live on pin oak leaves. Alex Perry, The Enquirer, 1 July 2025 According to WebMD, a single large pin oak tree can rain down up to 400,000 oak leaf itch mites per day. Alex Perry, The Enquirer, 1 July 2025 As a result, what was originally a course built on farmland was crowded with crab apples, flowering cherries, blue spruces and loads and loads of pin oaks. Brendan Quinn, New York Times, 14 June 2025 See All Example Sentences for pin oak

Word History

First Known Use

1813, in the meaning defined above

Time Traveler
The first known use of pin oak was in 1813

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Cite this Entry

“Pin oak.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pin%20oak. Accessed 21 Aug. 2025.

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