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
There’s trying to find the needle in the haystack, and then there’s building a better magnet.
—
Expert Panel®, Forbes.com, 20 Aug. 2025
Multiple needles, multiple haystacks Technology plays a key role in helping CBP to stay one step ahead.
—Adam Stone, USA Today, 15 Aug. 2025
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
Teams had to choose between finding a bracelet in ginormous haystacks and delivering heaps of heavy wood via backpack and wheelbarrow, and both tasks turned out to be feats of strength.
—Nick Caruso, TVLine, 16 Apr. 2025
See All Example Sentences for haystack
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Expert Panel®, Forbes.com, 20 Aug. 2025
Multiple needles, multiple haystacks Technology plays a key role in helping CBP to stay one step ahead.
—Adam Stone, USA Today, 15 Aug. 2025
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
Teams had to choose between finding a bracelet in ginormous haystacks and delivering heaps of heavy wood via backpack and wheelbarrow, and both tasks turned out to be feats of strength.
—Nick Caruso, TVLine, 16 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 14 Sep. 2025.
Copy CitationKids Definition
haystack
noun
hay·stack
-ˌstak 
: a stack of hay
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