the most important or primary part

मुख्य भाग

English Usage: The main reason for the delay was traffic.

Hindi Usage: देरी का मुख्य कारण ट्रैफिक था।

the act of cutting down a tree

पेड़ काटना

English Usage: The felling of old trees was necessary for the new construction.

Hindi Usage: नए निर्माण के लिए पुराने पेड़ों को काटना आवश्यक था।

to cause to fall by striking

गिराना

English Usage: He had to fell the tree to prevent damage to the house.

Hindi Usage: उसे घर को नुकसान से बचाने के लिए पेड़ गिराना था।