Dictionary

knife–edge

noun \ˈnīf-ˌej\

: something that is very narrow or sharp

Full 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

Browse

Next Word in the Dictionary: knife–edgedPrevious Word in the Dictionary: knife–boyAll Words Near: knife-edge
May 28, 2015
fictioneer Hear it
someone who writes fiction
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears