fellow.

A companion; a comrade.

An animal which is a member of a breed or species, or a flock, herd, etc.

An object which is associated with another object; especially, as part of a set.

One comparable in characteristics with another; especially, as belonging to the same class or group.

my fellow Americans

Rebecca and her fellow workers are to go on strike.

One comparable in characteristics with another; especially, as belonging to the same class or group. One with abilities, achievements, skills, etc., equal to those of another; a thing with characteristics, worth, etc., equal to those of another thing.

to have no fellows

One comparable in characteristics with another; especially, as belonging to the same class or group. One in the same condition, or situation of need, as another.

One comparable in characteristics with another; especially, as belonging to the same class or group. An equal in character, power, rank, etc.; a peer.

One comparable in characteristics with another; especially, as belonging to the same class or group. One living at the same time, or about the same age as another, especially when in the same field of study or work.

Senses relating to academia; often in the form Fellow. 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.

Senses relating to academia; often in the form Fellow. A (senior) member of a learned or professional society.

a Fellow of the Royal Society

Senses relating to academia; often in the form Fellow. A (senior) member of a learned or professional society. A senior member of an Inn of Court.

Senses relating to academia; often in the form Fellow. An honorary title bestowed by an educational instutition upon a distinguished person (often an alumna or alumnus).

Senses relating to academia; often in the form Fellow. 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.

Senses relating to academia; often in the form Fellow. A physician undergoing a fellowship (supervised subspecialty medical training) after having completed a residency (specialty training program).

Senses relating to academia; often in the form Fellow. A member of a college or university who manages its business interests.

Senses relating to academia; often in the form Fellow. A senior researcher or technician in a corporation, especially one engaged in research and development.

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.

my dear fellow

old fellow

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

An animal or object.

One of a pair of things suited to each other or used together; a counterpart, a mate.

One of a pair of things suited to each other or used together; a counterpart, a mate. A partner in life or marriage; particularly, a male lover, a boyfriend, a husband; also, the mate of an animal.

Alternative form of fella: used as a general intensifier.

A colleague or partner.

A colleague or partner. An associate in the commission of a crime or other wrongful act; an accomplice.

A close companion or friend; also, a companion or friend whom one eats or drinks with.

One who participates in an activity; a participant; followed by of.

A man without good breeding or of lower social status; a common or ignoble man; also, used as a polite term of address.

A servant or slave.

A worthless person; a churl, a knave; also, used as a term of address.

Synonym of schoolmate: a student at the same school.

A black man.

To address (someone) as "fellow", especially in an insulting manner (see noun sense 10.6).

To equal (someone or something); also, to cause or find someone or something to be equal to (another).

To pair or suit (someone or something) with another; also, to pair or suit someone or something with (another); to arrange (things) in pairs.

To associate or join (oneself, someone, or something) with another in companionship or a partnership.

To cause or portray (someone or something) to be equal to (another).

To associate or go together with (someone or something); to become a partner of (someone or something).

To associate or join with a someone or something in companionship or a partnership.