knife-edge

noun

ˈnīf-ˌej How to pronounce knife-edge (audio)
1
: a sharp wedge of steel or other hard material used as a fulcrum for a lever beam in a precision instrument
2
: a sharp narrow knifelike edge

Examples of knife-edge 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.
It’s made from washable cotton for easy cleaning, and has a crisp knife-edge finish for an even sleeker look. — Michelle Baricevic, PEOPLE, 9 June 2026 In simple terms though, as long as the Strait of Hormuz stays closed, markets remain on a knife-edge. — Jim Edwards, Fortune, 11 May 2026 That knife-edge divide — dry pavement on one side, a downpour on the other — is what made Ford’s footage so startling. — Hanna Wickes, Miami Herald, 16 Apr. 2026 But Iran are still waiting for their first win of the tournament and their hopes of progressing to the knockout stages against all odds are on a knife-edge. — Tim Spiers, New York Times, 20 June 2026 See All Example Sentences for knife-edge

Word History

First Known Use

1818, in the meaning defined at sense 1

Time Traveler
The first known use of knife-edge was in 1818

Rhymes for knife-edge

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Browse Nearby Words

knife-boy
knife-edge
knife-edged
See all Nearby Words

Cite this Entry

“Knife-edge.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knife-edge. Accessed 7 Jul. 2026.

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Kids Definition

knife-edge

noun
ˈnī-ˌfej
: a sharp wedge usually of steel used as a support for a lever beam in a very exact instrument (as a balance)
Last Updated: - Updated example sentences
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