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Arbor Day

noun

  1. a day, varying in date but always in the spring, observed in certain states of the U.S. by the planting of trees.

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Word History and Origins

Origin of Arbor Day1

An Americanism dating back to 1870–75

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Example Sentences

He made no reply, going on carefully with his arbor-day practice.

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petrichor

[pet-ri-kawr]

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arboraceousarboreal

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