1. a person who collects things as a hobby or for study
2. a person whose job is to collect money, taxes, or debts

Examples

• She is an avid stamp collector with albums from around the world.
• The art collector donated several paintings to the museum.
• My grandfather was a coin collector for over forty years.
• The tax collector visited businesses to ensure compliance.
• A debt collector called about the overdue payment.
• The ticket collector checked our passes at the train station.
• He became a serious book collector after retirement.