What is the meaning of 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.

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

A person with abilities, achievements, skills, etc., equal to those of another person; a thing with characteristics, worth, etc., equal to those of another thing.

One in the same condition, or situation of need, as another.

1. An equal in character, power, rank, etc.; a peer.
2. A person living at the same time, or about the same age as another, especially when in the same field of study or work.

An equal in character, power, rank, etc.; a peer.

A person living at the same time, or about the same age as another, especially when in the same field of study or work.

Often in the form Fellow: academic senses.

1. Originally, one of a group of academics who make up a college or similar educational institution; now, a senior member of a college or similar educational institution involved in teaching, research, and management of the institution.
2. An honorary title bestowed by a college or university upon a distinguished person (often an alumna or alumnus).
3. A (senior) member of a learned or professional society.

   Originally, one of a group of academics who make up a college or similar educational institution; now, a senior member of a college or similar educational institution involved in teaching, research, and management of the institution.

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

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

   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.

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

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

   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.

   Usually qualified by an adjective or used in the plural: an individual or person regardless of gender.

   An animal or object.

   1. One of a pair of things suited to each other or used together; a counterpart, a mate.
      1. Originally , a person's partner (of either sex) in life or marriage; a spouse; also, the mate of an animal; now , a person's male lover or partner; a boyfriend; a husband.
   2. Alternative form of fella (“used as a general intensifier”)

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

   1. Originally , a person's partner (of either sex) in life or marriage; a spouse; also, the mate of an animal; now , a person's male lover or partner; a boyfriend; a husband.

   Originally , a person's partner (of either sex) in life or marriage; a spouse; also, the mate of an animal; now , a person's male lover or partner; a boyfriend; a husband.

   Alternative form of fella (“used as a general intensifier”)

   1. A colleague or partner.
      1. An associate in the commission of a crime or other wrongful act; an accomplice.
   2. A close companion or friend; also, a companion or friend whom one eats or drinks with.
   3. Followed by of: one who participates in an activity; a participant.
   4. A man without good breeding or of lower social status; a common or ignoble man; also, used as a polite term of address to such a person.
   5. A person's servant or slave.
   6. A worthless person; a churl, a knave; also, used as a term of address to a person regarded as such.
   7. Synonym of schoolmate (“a student at the same school”)
   8. A black man.

   A colleague or partner.

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

   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.

   Followed by of: one who participates in an activity; a participant.

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

   A person's servant or slave.

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

   Synonym of schoolmate (“a student at the same school”)

   A black man.

   1. To address (someone) as "fellow", especially in an insulting manner (see noun sense 10.6).
   2. To equal (someone or something); also, to cause or find someone or something to be equal to (some other person or thing).
   3. 1. To pair or suit (someone or something) with some other person or thing; also, to pair or suit someone or something with (some other person or thing); to arrange (things) in pairs.
      2. Followed by to or with: to associate or join (oneself, someone, or something) with some other person or thing in companionship or a partnership.
      3. Followed by to or with: to cause or portray (someone or something) to be equal to some other person or thing.
      4. To associate or go together with (someone or something); to become a partner of (someone or something).

   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 (some other person or thing).

   1. To pair or suit (someone or something) with some other person or thing; also, to pair or suit someone or something with (some other person or thing); to arrange (things) in pairs.
   2. Followed by to or with: to associate or join (oneself, someone, or something) with some other person or thing in companionship or a partnership.
   3. Followed by to or with: to cause or portray (someone or something) to be equal to some other person or thing.
   4. To associate or go together with (someone or something); to become a partner of (someone or something).

   To pair or suit (someone or something) with some other person or thing; also, to pair or suit someone or something with (some other person or thing); to arrange (things) in pairs.

   Followed by to or with: to associate or join (oneself, someone, or something) with some other person or thing in companionship or a partnership.

   Followed by to or with: to cause or portray (someone or something) to be equal to some other person or thing.

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

   Followed by with: to associate or join with a person or thing in companionship or a partnership.

   fellow

   Source: wiktionary.org