[count] 1 informal + somewhat old-fashioned a : a male person : a boy or man
▪ fellows and girls at a party ▪ He seems like an amiable fellow. [=guy] ▪ a fine fellow ▪ a young fellow like you ▪ Your son's a bright little fellow.
b : a male companion of a girl or woman : boyfriend
▪ She's found herself a new fellow. 2 old-fashioned : a member of a group of people who have shared interests, activities, etc. — usually plural ▪ He's eager to rejoin his fellows. ▪ She wants to protect the good reputation she enjoys among her fellows. 3 or Fellow a : a member of a literary, artistic, or scientific organization
▪ a fellow of the American College of Surgeons ▪ a Fellow of the Royal Society/Academy
b : a senior member of some British colleges and universities 4 chiefly US : an advanced student at a university who is given money to pay for food, housing, etc. : a graduate student who has been granted a fellowship
▪ a postdoctoral fellow ▪ a teaching/research fellow [=a graduate student who gets money in exchange for teaching/research] ▪ a medical fellow