jetton (n.)

disc of cheap metal stamped like a coin and used as counters or checks in card games, accounting, etc., 1762, from French jeton, from Old French jeter "to calculate," literally "to throw" (from PIE root *ye- "to throw, impel"). They were common 16c.-17c. French jeton also was used mid-20c. of special coins used in pay phones.

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