English Dictionary

knife-edge

名詞

比喩的用法

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.

日本語の意味

鋭角に研がれた切先を持つ金属部品。水平な面に置かれ、振り子や釣り合い計などの装置の回転軸として、摩擦を最小限に抑えるために用いられる部品。

The clockmaker carefully balanced the knife-edge on its bearing so the pendulum could swing with minimal friction.

時計職人は振り子が最小限の摩擦で振れるように、軸受の上に振り子の軸として用いる鋭く研がれた鋼の刃先を慎重に調整した。

意味（1）

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.

意味（2）

(figuratively) A precarious balance that could be upset by a very small force in either direction.

The game was on a knife-edge.

意味（3）

Used other than figuratively or idiomatically: the edge of a knife.

knife-edges （ plural ）