fellow
n. countable B2 Upper Intermediate Oxford US //ˈfɛɫoʊ// UK //fˈɛləʊ// fel·low
n. a man or a boy. You can use it to be friendly, or sometimes to talk about someone you do not know very well.
n. a man or boy; a person in the same group or situation as oneself. Often used as a familiar or slightly old-fashioned synonym for 'man', or to indicate shared status.
He seems like a very nice fellow.
The young fellow at the front desk helped us find a great local restaurant for dinner.
While he was a brilliant scholar, he was also a jolly fellow who enjoyed hosting large dinner parties for his colleagues and students.
Usage
Often used as an attributive noun to indicate shared experience, such as 'fellow citizens' or 'fellow students'.