sharp edge
Knife's business end
A sharp edge is a border or boundary where material tapers to a fine line capable of cutting.
Knives, razors, and broken glass have sharp edges.
The phrase extends to anything dangerously thin or abrupt: The cliff dropped away in a sharp edge.
Figuratively, someone on a sharp edge is in a precarious or tense state.
- bladeFlat cutting edge
- razorBlade for removing hair
- knifeSharp cutting utensil
- box cutterHandheld package-opening tool
- cutSeverance or reduction
slice · keen · honed · whetstone · steel · surgical precision · precision · paper · paper cut · thin · fine line · glint · serrated · cleave · slit · nick · wound · glass
- edgesborder, boundary, brim, brink, perimeter
- safety signswarning sign, warning signs, danger sign, caution sign, warning labels
- anglesacute angle, angle, obtuse angle, right angle, straight angle
- defectsdefect, flaw, crack, cracks, defective
- Mind Idiomsopen mind, quick wit, bird brain, pea brain, big brain
- warningswarning, alert, caution, danger, warning sign
surface geometry
sharp edgerounded edge
Curved boundary, not angular
beveled edge · smooth edge · curved edge · soft edge · rounded corner
sharp, edge, sharps, sharpen, sharpened, sharpening, sharpens, sharper, sharpest