'Man' has been used as a verb in:

I will not let you go.' In this sentence 'go' is a/an- The door opened automatically. The verb in the sentence is- A rolling stone gathers no moss. What 'rolling' is ? 'He contemplated marrying his cousin.' Here 'marrying' is a/an- Water the plants. The word 'water' is used as- 'Huffing and puffing, we arrived at the classroom door with only seven seconds to spare.' In this sentence the verb 'arrived' is- "I water the plants." The word 'water' is used as- Mother loves me বাক্যে 'loves' হচ্ছে- 'He enjoyed sleeping in the open air. Here 'sleeping' is a/a- He ran a race. Here ran is a - verb.