Knife-edge Definition
nīfĕj
noun
Any very sharp edge.
Webster's New World
The edge of a knife.
Webster's New World
A metal wedge whose fine edge serves as the fulcrum for a scale beam, pendulum, etc.
Webster's New World
(figuratively) A precarious balance that could be upset by a very small force in either direction.
Wiktionary
Synonyms:
Other Word Forms of Knife-edge
Noun
Singular:
knife-edgePlural:
knife edges
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