An adult male human being

A person in general (regardless of gender)

एक व्यक्ति

English Usage: There was a man who helped me.

Hindi Usage: एक आदमी था जिसने मेरी मदद की।

To handle or operate (a machine or device)

To supply with personnel

कर्मियों से भरना

English Usage: They need to man the new positions quickly.

Hindi Usage: उन्हें नई पदों को जल्दी से भरने की जरूरत है।