on a/the knife-edge
Definition of on a/the knife-edge
: in a dangerous or important situation in which two very different results are possible The election results hung on a knife-edge. a region resting on a knife-edge after several wars living on the knife-edge of poverty
Word by Word Definitions
: a sharp wedge of steel or other hard material used as a fulcrum for a lever beam in a precision instrument
: a sharp narrow knifelike edge
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