1. a person who works with you in the same organization or profession

Examples

• She discussed the project with her colleagues at the meeting.
• My colleague from the marketing department helped me with the presentation.
• The doctor consulted with his colleagues before making a diagnosis.
• I'm having lunch with a few colleagues today.
• She's well-respected by her colleagues in the law firm.
• The new employee was introduced to all his colleagues on the first day.