Definitions

haystack

[hey-stak] / ˈheɪˌstæk /

NOUN

stack of hay

Synonyms

STRONG

hay haycock hayrick pile rick sheaf stack

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It’s quickly resembling a small number of needles in a big haystack.

From Los Angeles Times • Apr. 15, 2026

Maven was built to find the needle in the haystack.

From Barron's • Apr. 5, 2026

Clough added, "As microplastic researchers looking for microplastics in the environment, we're searching for the needle in the haystack, but there really shouldn't be a needle to begin with."

From Science Daily • Mar. 29, 2026

The messages, sent in 2018 and 2019—and up until the day before Epstein’s arrest—were needles in a roughly 20,000-page haystack of Epstein documents released by a House committee last week.

From The Wall Street Journal • Nov. 21, 2025

But I think if your dreams are small they can get lost, like trying to find a needle in a haystack.

From "Lucky Broken Girl" by Ruth Behar