fellow

[in the plural] A companion; a comrade.

An individual regardless of gender; usually qualified by an adjective or used in the plural.

(informal) A male person; a bloke, a chap, a guy, a man; also, preceded by a modifying word, sometimes with a sense of mild reproach: used as a familiar term of address to a man.

(humorous) An animal or object.

[before a noun] used before a noun for people to show that they are in the same group or class as someone

[before a noun, in the plural] One in the same condition, or situation of need, as another.

[in the plural] An animal which is a member of a breed or species, or a flock, herd, etc.

An academic who constitutes an educational institution (such as a college or university); now particularly, a senior member involved in teaching, research, and management of the institution.

A (senior) member of a learned or professional society.

(US) A member of a college or university who manages its business interests.

(US) A senior researcher or technician in a corporation, especially one engaged in research and development.

(UK, historical) A senior member of an Inn of Court.

A scholar appointed to a fellowship, that is, a paid academic position held for a certain period which usually requires the scholar to conduct research.

(US, Canada) A physician undergoing a fellowship (supervised subspecialty medical training) after having completed a residency (specialty training program).

An honorary title bestowed by an educational instutition upon a distinguished person (often an alumna or alumnus).

[in the plural] An object which is associated with another object; especially, as part of a set.

[before a noun] One with abilities, achievements, skills, etc., equal to those of another; a thing with characteristics, worth, etc., equal to those of another thing.

[before a noun, in the plural] (no longer used) One living at the same time, or about the same age as another, especially when in the same field of study or work.

(slang, no longer used) Synonym of schoolmate: a student at the same school.

(no longer used) A close companion or friend; also, a companion or friend whom one eats or drinks with.

(no longer used) One of a pair of things suited to each other or used together; a counterpart, a mate.

[before a noun, in the plural] (no longer used) An equal in character, power, rank, etc.; a peer.

(no longer used) A colleague or partner.

(no longer used) An associate in the commission of a crime or other wrongful act; an accomplice.

(no longer used) One who participates in an activity; a participant; followed by of.

(no longer used) A partner in life or marriage; particularly, a male lover, a boyfriend, a husband; also, the mate of an animal.

(no longer used) A man without good breeding or of lower social status; a common or ignoble man; also, used as a polite term of address.

(offensive, no longer used) A worthless person; a churl, a knave; also, used as a term of address.

(no longer used) A servant or slave.

(offensive, no longer used) A black man.

[with oneself] (no longer used) to join yourself or someone else with another as a companion or partner

(literary, no longer used) To associate or go together with (someone or something); to become a partner of (someone or something).

(literary, no longer used) To associate or join with a someone or something in companionship or a partnership.

(no longer used) To address (someone) as "fellow", especially in an insulting manner (see noun sense 10.6).

(literary, no longer used) to be as good or as great as someone or something

(no longer used) to put people or things into pairs, joining each one with another that suits it

[with oneself] (no longer used) To cause or portray (someone or something) to be equal to (another).