A person who dealt in small coins or engaged in money-changing, especially in ancient times.
From Greek 'kollybos' (small coin) plus the suffix '-ist' indicating a person who practices something. The term comes from the financial practices of ancient Mediterranean traders and money changers.
Jesus famously drove the collybists (money changers) out of the temple—they weren't dishonest necessarily, but they were seen as exploiting pilgrims by exchanging their money at unfavorable rates!
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