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| knife-edge (plural knife-edg·es) |
noun |
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| Definition: |
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1. critical time in situation: a decisive and precarious point at which a situation is finely balanced between different possibilities or outcomes
  with the future of the project on a knife-edge
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2. knife's cutting edge: the cutting edge of the blade of a knife
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3. object like edge of knife: an object that is sharp, thin, and narrow
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4. technology fulcrum for precise instrument: a metal wedge whose narrow edge is used as a fulcrum for a scale beam or a lever in a precision instrument
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