knife-edge

noun
\ˈnīf-ˌej \

Definition of knife-edge 

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

First Known Use of knife-edge

1818, in the meaning defined at sense 1

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Phrases Related to knife-edge

on a/the knife-edge

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The first known use of knife-edge was in 1818

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More Definitions for knife-edge

knife-edge

noun

English Language Learners Definition of knife-edge

: something that is very narrow or sharp

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