Arbor Day

noun

: a day designated for planting trees

Examples of Arbor Day in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The 21st Arbor Day celebration was organized by Harford County to plant native trees throughout the County. The Aegis, Baltimore Sun, 3 Apr. 2026 The Morton Arboretum is offering an Arbor Day Plant Sale from April 23-25 near the arboretum’s main Route 53 entrance in Lisle. Michelle Mullins, Chicago Tribune, 2 Apr. 2026 The nonprofit development group will host a groundbreaking event on Arbor Day as a fundraiser for the project. Neal Franklin, Dallas Morning News, 1 Mar. 2026 The writer also notes that the campus’ landscaping has been recognized by the Arbor Day Foundation as a Tree Campus Higher Education Institution for the eighth year in a row. Fort Worth Star-Telegram, 19 Feb. 2026 See All Example Sentences for Arbor Day

Word History

Etymology

Latin arbor tree

First Known Use

1863, in the meaning defined above

Time Traveler
The first known use of Arbor Day was in 1863

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Cite this Entry

“Arbor Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Arbor%20Day. Accessed 5 Apr. 2026.

Kids Definition

Arbor Day

noun
: a day in April set aside as a day to plant trees

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