Student or Learner
I am pretty confused about the meaning of colleague. I have looked up dictionaries and all said a colleague is a person of staff or who we work with. What I want to know is can colleague mean a classmate?
I'd accept a more informal usage than some of my colleagues here. 'Colleague' can be used to mean a person who is engaged in an academic or business pursuit with others. I do think that classmates can be colleagues, but I wouldn't use the term unless there was a shared body of knowledge that you both knew and used for a constructive purpose. Postgraduate students working together on a project could be called colleagues. I would not use it for students who are simply learning something together. So classmates are generally not colleagues.