from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A sharp cutting edge.
- noun A sharp, narrow edge or border.
- noun A wedge of metal used as a low-friction fulcrum for a balancing beam or lever.
from The Century Dictionary.
- noun The wedge-like piece of steel which serves as the axis on the fine edge of which a scale-beam, a pendulum, or any thing required to oscillate with the least possible friction rests and turns. See
from the GNU version of the Collaborative International Dictionary of English.
- noun (Mech.) A piece of steel sharpened to an acute edge or angle, and resting on a smooth surface, serving as the axis of motion of a pendulum, scale beam, or other piece required to oscillate with the least possible friction.
- noun See
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A piece of
steel sharpenedto an acuteedge or angle, and resting on a smooth surface, serving as the axisof motionof a pendulum, scale beam, or other piece required to oscillatewith the least possible friction.
- noun figuratively A
precarious balancethat could be upsetby a very small forcein either direction.
- noun Used other than as an idiom: the
edgeof a knife.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the sharp cutting side of the blade of a knife
- noun a narrow boundary
Sorry, no etymologies found.
Then came the rush, five policemen, in single file, with superb steadiness, running along the knife-edge.
He gazed into the gulf on either side and ran his eyes along the knife-edge he must travel.
Despite the team's rise from the brink, the season essentially remains on a knife-edge.
He tried to save himself by throwing his body across the knife-edge; but at that moment he knew death.
But Fox News had to suddenly cut away from Palin to hear third place loser Jon Huntsman flap his jaws.9.40pm: Tim Carney of the Washington Examiner uses an apt sports metaphor:9.39pm: Back to the knife-edge battle between Newt Gingrich and Rick Santorum: with 46% of precincts in, Gingrich is a mere 74 votes ahead of Santorum.
My view of the economy is that there is no knife-edge, and that the recovery has a long way to go before inflation becomes a legitimate worry.
He wears black clothes, pants creased to a knife-edge, loose shirts with mandarin collars.
And after Davies gives a number of remarkable facts about the incredible fine-tuning of the universe, he adds, “The cliché that “life is balanced on a knife-edge” is a staggering understatement in this case: no knife in the universe could have an edge that fine.”
One of the more irritating tropes in economic journalism is the "knife-edge" metaphor.
The maid with the twisted arms lay below in the thicket and kept watch on the knife-edge passage.