Definitions

1. noun

a person, especially a man, who is considered to be on an equal social level with the speaker, or a person who shares a common interest or activity with the speaker

“He’s a fellow student at the university, so we often study together.”

2. noun

a person who is a member of a particular profession, organization, or group

“He’s a fellow of the Royal Society, an organization of scientists.”

3. adjective

relating to or characteristic of a fellow

“It was a fellow traveler who helped us get to the airport on time.”

4. verb

to be a fellow of or associated with a particular group or activity

“He’s a fellow of a local hiking club and loves to go on long hikes.”