noun · physical power, force, or energy

他使了很大的劲才把石头搬开。

noun · spirit, vigor, or interest in an activity

听到要去郊游，孩子们立刻来了劲。

noun · an air, manner, or outward look reflecting a mood

瞧他那股认真劲儿。

noun · possessing great force, strength, or energy, often describing natural elements or physical power

窗外突然刮起了一阵凛冽的劲风。