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]
(..) Wow, this is history in the making. Nobody has seen the racing legend in over years! Hey, Doc! Come look at this fellow on the radio. He looks just like you. - McQueen passes on the inside! - He's nearly a lap down. Can he catch up to them with only laps to go? (..)2006 Cars
(..) fix the road. The town needs this. No. I know his type. Racecar. That's the last thing this town needs. OK, I didn't want to have to do this, Doc, but you leave me no choice. Fellow citizens, you're all aware of our town's proud history. Here she goes again. Radiator Springs, the glorious jewel (..)2006 Cars