This is the 140th most frequent Hindi word.
सर
The Hindi word "सर" can mean "head" or "sir" depending on the context.
Here, 'सर' represents 'sir' as a polite formal address for a senior individual.
यह सर का निर्णय था।
This was Sir's decision.
In this sentence, 'सर' denotes the 'head' as a physical part of the body.
कटते हुए बालों के लिए सर झुकाया गया।
The head was bowed for cutting the hair.
Here, 'सर' is used as a respectful form of address to a person in authority or a teacher.