knife edges
Sharp blade margins
Knife edges are the sharp cutting sides of knife blades.
The term extends to any thin, sharp ridge or edge: The mountain ridge narrowed to a knife edge.
Figuratively, knife edge describes precarious situations with little margin for error: The election was balanced on a knife edge.
Negotiations are on a knife edge.
- razor sharpExtremely fine edge
- sharpenMake keener or finer
- cutSeverance or reduction
- slicePortion cut off
- whetstoneStone for sharpening blades
blade · fine line · carve · stab · balances · honing · paper thin · tool maintenance · points · honing steel · whittle · samurai swords · carbon steel · pare · metallurgy · fillet · box cutter · Swiss army
- rocky terraincliffs, boulders, scree, outcrops, rockfall
- mountain ridgesaretes, hogbacks, razorbacks, continental divides