0 in a difficult or worrying situation of which the result is very uncertain:
At the moment the election seems balanced on a knife edge.
1 narrow and sharp:
We had to climb over a knife-edge mountain ridge.
2 used to describe a situation where the result is very uncertain:
a knife-edge vote
NOVÉ SLOVÁ
European
May 10, 2021
SLOVO DŇA
Shimmer
knife edge