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Mother's Day

noun

: the second Sunday in May appointed for the honoring of mothers

Word History

First Known Use

1890, in the meaning defined above

Time Traveler
The first known use of Mother's Day was in 1890

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Cite this Entry

“Mother's Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Mother%27s%20Day. Accessed 27 Nov. 2025.

Kids Definition

Mother's Day

noun
: the second Sunday in May set aside for the honoring of mothers

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