A rounded handle that is used to open or close a door.

A metaphorical concept referring to the point of entry or access to something (often used in a figurative sense).

प्रवेश का बिंदु

English Usage: The doorknob to success is hard work and dedication.

Hindi Usage: सफलता का दरवाजे का नॉब मेहनत और समर्पण है।