1
: a stack of hay
2
: a vertical standing wave in turbulent river waters
Examples of haystack in a Sentence
Recent Examples on the Web
Tracking down the best leave-in conditioner for fine hair can feel like searching for a needle in a holy-grail haystack.
—
Jailynn Taylor, Allure, 5 June 2025
Self-driving and a needle in a (literal) haystack challenge?
—Nick Caruso, TVLine, 16 Apr. 2025
But without clear-cut guidance, most feel like wading through a thousand haystacks.
—Phillimon Zongo, Forbes.com, 7 May 2025
That search for a needle in the haystack took over a year for Segar and onewith.
—Brandon Kochkodin, Forbes.com, 26 Apr. 2025
See All Example Sentences for haystack
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Jailynn Taylor, Allure, 5 June 2025
Self-driving and a needle in a (literal) haystack challenge?
—Nick Caruso, TVLine, 16 Apr. 2025
But without clear-cut guidance, most feel like wading through a thousand haystacks.
—Phillimon Zongo, Forbes.com, 7 May 2025
That search for a needle in the haystack took over a year for Segar and onewith.
—Brandon Kochkodin, Forbes.com, 26 Apr. 2025
See All Example Sentences for haystack
Cite this Entry
“Haystack.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/haystack. Accessed 29 Jul. 2025.
Copy CitationKids Definition
haystack
noun
hay·stack
-ˌstak 
: a stack of hay
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