a teaching/research 'fellow' [=a graduate student who gets money in exchange for teaching/research]
He attended the concert with a 'fellow' student. [=someone who is a student, as he is]
He has always tried to be of service to 'his fellow man'. [=to other people]
(..) That would be in our winter department. Oh. Um, I was just wondering; Has another young woman, The Queen perhaps, I don't know, passed through here? Only one crazy enough to be out in this storm is you, dear. You and this fellow... Hoo hoo. Big summer blow out. Carrots. Hah? Behind you. (..)2013 Frozen