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
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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
See the full definition for knife-edge in the English Language Learners Dictionary