An equal in power, rank, character, etc.

In the English universities, a scholar who is appointed to a foundation called a fellowship, which gives a title to certain perquisites and privileges.

In an American college or university, a member of the corporation which manages its business interests; also, a graduate appointed to a fellowship, who receives the income of the foundation.

A member of a literary or scientific society; as, a Fellow of the Royal Society.

A companion; a comrade; an associate; a partner; a sharer.

a person who is frequently in the company of another; "drinking companions"; "comrades in arms"

a comrade, an associate of equal rank and privilege

an associate, comrade, or peer

A man without good breeding or worth; an ignoble or mean man.

a boy or man; "that chap is your host"; "there's a fellow at the door"; "he's a likable cuss"

an informal form of address for a man; "Say, fellow, what are you doing?"; "Hey buster, what's up?"