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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KNIFE-EDGE Defined for English Language Learners

knife-edge

Definition of knife-edge for English Language Learners

  • : something that is very narrow or sharp


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