The joint connecting the thighbone to the shinbone, allowing for the movement of the leg.

घुटना

English Usage: She injured her knee while playing soccer.

Hindi Usage: उसने फुटबॉल खेलते समय अपना घुटना चोटिल कर लिया।

Situated deep in relation to something else, commonly used in the phrase "knee-deep" meaning submerged up to the knees.

घुटनों तक

English Usage: They were knee-deep in water after the heavy rain.

Hindi Usage: भारी बारिश के बाद वे पानी में घुटनों तक डूब गए।

To strike or push someone with the knee.

घुटने से मारना

English Usage: He kneed him in self-defense during the fight.

Hindi Usage: उसने लड़ाई के दौरान आत्मरक्षा में उसे घुटने से मारा।