: a fine wire or thread in the focus of the eyepiece of an optical instrument used as a reference line in the field or for marking the instrumental axis
—used figuratively to describe someone or something being targeted as if through an aiming device having crosshairs
The tactics landed the company's top brass in the crosshairs of the Securities and Exchange Commission.—Houston Chronicle

Examples of crosshair in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The moves sparked a conflict that has plunged the region into unprecedented turmoil and placed Washington’s allies, including Saudi Arabia, in Iran’s crosshairs. — Mostafa Salem, CNN Money, 10 Oct. 2026 By expressly including the Federal Food, Drug, and Cosmetic Act in the directive, the National Fraud Enforcement Division appears to be placing drug and device makers, among others, more clearly in its crosshairs. — Ed Silverman, STAT, 7 Oct. 2026 Nussbaum’s family became the target of hate mail from members of the local John Birch Society—postcards with crosshairs on them addressed to Karen’s mother. — Literary Hub, 24 Sep. 2026 That’s good news for CEO Dario Amodei and company, who once again found themselves in the White House’s crosshairs yesterday. — Andrew Nusca, Fortune, 15 Sep. 2026 See All Example Sentences for crosshair

Word History

First Known Use

1684, in the meaning defined above

Time Traveler
The first known use of crosshair was in 1684

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Cite this Entry

“Crosshair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crosshair. Accessed 13 Oct. 2026.

Kids Definition

cross hair

noun
: one of the very thin wires or threads in the eyepiece of an optical instrument (as a microscope) used as a reference line
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